Run jsmpp and Cloudhopper against our server: sar_* fragmentation confirmed and a truncated TLV tail silently accepted

This commit is contained in:
2026-09-06 07:00:45 +02:00
parent 4194816d6b
commit 0d1da1dc87
16 changed files with 2147 additions and 1 deletions
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@@ -196,7 +196,8 @@ document, library changes, and the AGENTS.md decision record each one needs.
| 2 | done | [02-smppsim.md](findings/02-smppsim.md) |
| 3 | done | [03-jasmin.md](findings/03-jasmin.md) |
| 4 | done | [04-kannel.md](findings/04-kannel.md) |
| 510 | not started | — |
| 5 | done | [05-java-clients.md](findings/05-java-clients.md) |
| 610 | not started | — |
Research notes behind this plan, 2026-09-05, are in `research/`: SMSC simulators, ESME clients
and validators, and operator quirks with one source URL per claim. Ask before trusting a claim here
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import assert from 'node:assert/strict';
import { readFileSync } from 'node:fs';
import test, { after, describe } from 'node:test';
import type { Session } from '../src/session.ts';
import type { Sms } from '../src/sms.ts';
import type { SmppServer } from '../src/server.ts';
import { server } from '../src/server.ts';
const CLOUDHOPPER_HOST = process.env.CLOUDHOPPER_HOST ?? 'cloudhopper:8080';
const SMPP_PORT = Number(process.env.SMPP_PORT ?? '2775');
const TLS_PORT = Number(process.env.TLS_PORT ?? '2776');
/** How long the "slow" server holds a submit_sm before answering it - long enough that a burst of
* concurrent submits genuinely queues behind a small window instead of finishing before it matters. */
const SLOW_DELAY_MS = 300;
function delay(ms: number): Promise<void> {
return new Promise(resolve => { setTimeout(resolve, ms); });
}
async function waitFor<T>(get: () => T | undefined, budget = 8000): Promise<T | undefined> {
const deadline = Date.now() + budget;
let value = get();
while (value === undefined && Date.now() < deadline) {
await delay(20);
value = get();
}
return value;
}
type DriverResult = Record<string, unknown>;
async function driver(path: string, params: Record<string, string> = {}): Promise<DriverResult> {
const url = `http://${CLOUDHOPPER_HOST}${path}?${new URLSearchParams(params).toString()}`;
const response = await fetch(url);
return response.json() as Promise<DriverResult>;
}
const manualTexts = new Set<string>();
const allSms: { session: Session; sms: Sms }[] = [];
function attach(session: Session): void {
session.on('sms', sms => {
allSms.push({ session, sms });
if (manualTexts.has(sms.message)) return;
// The slow server this phase's window scenarios need: every ordinary submit is held for
// SLOW_DELAY_MS before being answered, so a burst genuinely presses on a small window.
void delay(SLOW_DELAY_MS).then(() => sms.sendResp());
});
}
const { err: serverErr, server: smpp } = await server({ authenticate: () => true, idleTimeout: 40_000, port: SMPP_PORT });
assert.equal(serverErr, undefined);
assert.ok(smpp);
smpp.on('session', attach);
const key = readFileSync('/shared-certs/server.key');
const cert = readFileSync('/shared-certs/server.crt');
// Cloudhopper's SSL client (Netty 3.9.6.Final, from 2015) cannot complete a TLS 1.3 handshake - see
// findings/05-java-clients.md, Peer quirks. Capped here for S10 only; the plain listener above is
// unrestricted.
const { err: tlsServerErr, server: tlsSmpp } = await server({
authenticate: () => true,
idleTimeout: 40_000,
port: TLS_PORT,
tls: { cert, key, maxVersion: 'TLSv1.2' },
});
assert.equal(tlsServerErr, undefined);
assert.ok(tlsSmpp);
tlsSmpp.on('session', attach);
after(async () => {
await smpp.close();
await tlsSmpp.close();
});
async function waitForSessionCount(server_: SmppServer, count: number, budget = 15_000): Promise<Session[]> {
const found = await waitFor(() => ([...server_.sessions].length >= count ? [...server_.sessions] : undefined), budget);
assert.ok(found, `no ${String(count)} session(s) bound within ${String(budget)}ms`);
return found;
}
describe('S5 - window pressure against a slow sms handler (target 11)', () => {
for (const windowSize of [1, 10, 50]) {
test(`window ${String(windowSize)}: every request answered, none twice, order preserved`, async () => {
const session = `w${String(windowSize)}`;
const bind = await driver('/bind', { password: 'chpw', session, systemId: `ch-${session}`, windowSize: String(windowSize) });
assert.equal(bind.ok, true);
await waitForSessionCount(smpp, 1);
const count = windowSize === 50 ? 60 : windowSize * 3;
const burst = await driver('/windowBurst', {
count: String(count), prefix: session, session, timeoutMs: '30000',
});
assert.equal(burst.ok, true);
const results = burst.results as { index: number; messageId?: string; ok: boolean }[];
assert.equal(results.length, count);
assert.ok(results.every(r => r.ok), `every submit answered: ${JSON.stringify(results.filter(r => !r.ok))}`);
const ids = results.map(r => r.messageId);
assert.equal(new Set(ids).size, ids.length, 'no message id answered twice');
assert.ok((burst.peakWindowSize as number) <= windowSize, `peak window ${String(burst.peakWindowSize)} stayed within ${String(windowSize)}`);
// "Order preserved" here means each response correlates to its own request rather than a
// different one - guaranteed by Cloudhopper's own sequence-number-keyed window, which is
// exactly why the per-index messageId uniqueness above is the meaningful assertion: each
// of the `count` concurrent callers blocks on its own submit() and gets its own answer,
// racing only on which of them the OS schedules onto the window's free slot(s) first.
const arrived = allSms.filter(entry => entry.sms.message.startsWith(`${session}-`)).length;
assert.equal(arrived, count);
await driver('/unbind', { session });
});
}
});
describe('S5 - request expiry shorter than the handler delay (target 11)', () => {
test('the peer reports the expiry itself; our side is not left in a bad state', async () => {
const bind = await driver('/bind', {
password: 'chpw', requestExpiryTimeout: '100', session: 'expiry', systemId: 'ch-expiry',
windowMonitorInterval: '50', windowSize: '1',
});
assert.equal(bind.ok, true);
await waitForSessionCount(smpp, 1);
const text = 'expiry-probe';
manualTexts.add(text);
const submitted = driver('/submit', { session: 'expiry', text, timeoutMs: '5000' });
const sms = await waitFor(() => allSms.find(entry => entry.sms.message === text)?.sms);
assert.ok(sms);
// Held well past requestExpiryTimeout (100ms) before answering, so the peer's own window
// monitor gives up on it first - recorded, not asserted against, since that is the peer's call.
await delay(1000);
await sms.sendResp();
const result = await submitted;
assert.equal(result.ok, false);
// Cloudhopper's window monitor gives up on the expired slot with a RecoverablePduException,
// not the SmppTimeoutException its own per-call timeoutMs would throw - the two expiries are
// distinct mechanisms and this is the window monitor's own name for it.
assert.match(String(result.errorClass), /RecoverablePduException/);
const health = await driver('/health');
assert.equal(health.ok, true);
await driver('/unbind', { session: 'expiry' });
});
});
describe('S10 - Cloudhopper SSL client against our server({ tls })', () => {
test('handshake, bind, submit over TLS', async () => {
const bind = await driver('/bind', {
password: 'chsslpw', port: String(TLS_PORT), session: 'tls', systemId: 'ch-tls', useSsl: 'true',
});
assert.equal(bind.ok, true);
await waitForSessionCount(tlsSmpp, 1);
const text = 'over-tls-phase5';
const result = await driver('/submit', { session: 'tls', text });
assert.equal(result.ok, true);
assert.equal(result.commandStatus, 0);
const sms = await waitFor(() => allSms.find(entry => entry.sms.message === text)?.sms);
assert.ok(sms);
await driver('/unbind', { session: 'tls' });
});
});
describe('a refusing status is surfaced back to Cloudhopper', () => {
test('sms.sendResp({ status: "ESME_RMSGQFUL" }) reaches Cloudhopper in the response', async () => {
const bind = await driver('/bind', { password: 'chpw', session: 'refuse', systemId: 'ch-refuse' });
assert.equal(bind.ok, true);
await waitForSessionCount(smpp, 1);
const text = 'ch-refuse-me';
manualTexts.add(text);
const submitted = driver('/submit', { session: 'refuse', text, timeoutMs: '5000' });
const sms = await waitFor(() => allSms.find(entry => entry.sms.message === text)?.sms);
assert.ok(sms);
await sms.sendResp({ status: 'ESME_RMSGQFUL' });
const result = await submitted;
assert.equal(result.ok, true);
assert.equal(result.commandStatus, 0x00000014);
await driver('/unbind', { session: 'refuse' });
});
});
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x-log-limits: &log-limits
logging:
driver: json-file
options:
max-file: "3"
max-size: 20m
volumes:
# The build-time self-signed cert cloudhopper's image trusts (S10) - copied out at container
# start so node's test file can load the same key/cert into server({ tls }). Never committed.
cloudhopper-tls:
services:
cloudhopper:
build: ./interop-tests/peers/cloudhopper
image: interop-cloudhopper:5.0.10-ae6485a
command: ["node", "2775"]
<<: *log-limits
volumes:
- cloudhopper-tls:/shared-certs
healthcheck:
test: ["CMD-SHELL", "bash -c 'exec 3<>/dev/tcp/127.0.0.1/8080'"]
interval: 1s
retries: 30
timeout: 2s
# cloudhopper only ever dials node on this container's own network namespace, so this sees exactly
# its side of every scenario below (same pattern as compose.kannel.yaml). Both the plain (2775) and
# TLS (2776) listeners node opens are on this one veth.
capture:
image: nicolaka/netshoot:v0.16
network_mode: "service:cloudhopper"
cap_add:
- NET_ADMIN
- NET_RAW
depends_on:
cloudhopper:
condition: service_started
command: ["dumpcap", "-i", "any", "-f", "tcp port 2775 or tcp port 2776", "-w", "/captures/cloudhopper.pcapng"]
volumes:
- ./interop-tests/captures:/captures
node:
volumes:
- cloudhopper-tls:/shared-certs
depends_on:
capture:
condition: service_started
cloudhopper:
condition: service_healthy
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x-log-limits: &log-limits
logging:
driver: json-file
options:
max-file: "3"
max-size: 20m
services:
jsmpp:
build: ./interop-tests/peers/jsmpp
image: interop-jsmpp:3.0.3-a24db96
command: ["node", "2775"]
<<: *log-limits
healthcheck:
test: ["CMD-SHELL", "bash -c 'exec 3<>/dev/tcp/127.0.0.1/8080'"]
interval: 1s
retries: 30
timeout: 2s
# jsmpp only ever dials node:2775 on this container's own network namespace, so this sees exactly
# its side of every scenario below (same pattern as compose.kannel.yaml).
capture:
image: nicolaka/netshoot:v0.16
network_mode: "service:jsmpp"
cap_add:
- NET_ADMIN
- NET_RAW
depends_on:
jsmpp:
condition: service_started
command: ["dumpcap", "-i", "any", "-f", "tcp port 2775", "-w", "/captures/jsmpp.pcapng"]
volumes:
- ./interop-tests/captures:/captures
node:
depends_on:
capture:
condition: service_started
jsmpp:
condition: service_healthy
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# 05 java clients
Date: 2026-09-06. Repo commit: `4194816` (working tree, phase 5 changes uncommitted on top). Host
Docker: 29.6.2. Images: `interop-jsmpp:3.0.3-a24db96` (jsmpp cloned at commit `a24db96`, built with
`maven:3.9.11-eclipse-temurin-21`, run on `eclipse-temurin:21.0.8_9-jre-jammy`),
`interop-cloudhopper:5.0.10-ae6485a` (fizzed/cloudhopper-smpp cloned at commit `ae6485a`, same
build/runtime image pair, plus a build-time self-signed cert for S10), `nicolaka/netshoot:v0.16`
(capture sidecar and tshark), `node:24.18.0-bookworm-slim` (test runner, from the root
`compose.yaml`).
## Setup
Each peer is a small Java driver (its own Maven project, `interop-tests/peers/<peer>/`) exposing an
HTTP command channel on 8080 - the node test file drives scenarios by calling it, the same shape as
`kannel.test.ts`'s `sendsms()` HTTP calls, and the same port doubles as the compose healthcheck
target. jsmpp's driver binds one or more named `SMPPSession`s and answers with the real client's own
exceptions and return values; Cloudhopper's binds one or more named `SmppSession`s the same way.
Long-message wire shapes (UDH 8/16-bit, `sar_*`, `message_payload`) are all built through jsmpp's own
typed `submitShortMessage(..., OptionalParameter...)` API, never a raw socket - jsmpp exposes exactly
the fields needed. Only three deliberately-malformed PDUs (an unknown command id, a truncated TLV
stream, a body shorter than `sm_length` declares) cannot be expressed through any typed SMPP client,
jsmpp included, so those go out over a second, plain `Socket` the driver opens alongside its jsmpp
session - noted here so "jsmpp accepts our answer" claims below are read as applying to the typed-API
scenarios only, where jsmpp's own reaction is what is being tested.
Build snags, both fixed in the Dockerfile, not in `src/`:
- Cloudhopper's parent pom (`fizzed-maven-parent:1.15`) hardcodes `<source>1.7</source>` /
`<target>1.7</target>` directly in its compiler-plugin config, which modern `javac` refuses
("Source option 7 is no longer supported") and which `-Dmaven.compiler.source` cannot override
since it is not read from a property. Fixed by `sed`-injecting a `<build>` block into
`ch-smpp`'s own pom (which declares none) with `source`/`target` `8`, the narrowest override that
changes nothing else.
- Cloudhopper's test sources reference `javax.annotation.PreDestroy` (JSR-250), removed from the JDK
this builds with. `-DskipTests` only skips running them; Maven's `install` lifecycle still
test-*compiles* them first. `-Dmaven.test.skip=true` skips compiling them too.
- Cloudhopper's `SslContextFactory` only takes the "no validation" branch when *neither* a keystore
nor a truststore is configured; a client with only a trust store falls through to
`loadKeyStore()` with a null path and fails ("SSL doesn't have a valid keystore"). Fixed by also
building a PKCS12 keystore from the same build-time self-signed cert and pointing
`SslConfiguration.setKeyStorePath()` at it - functionally unused (our server never requests a
client certificate) but required for Cloudhopper's own SSL setup to get past its own null check.
- The shared `cloudhopper-tls` volume Cloudhopper's entrypoint copies `server.key`/`server.crt`
into (so node's test file can load the same pair into `server({ tls })`) came out root-owned,
0600 - unreadable by `node`'s container, which runs as uid 1000. Fixed with a `chmod 644` in the
same entrypoint step.
- Cloudhopper's SSL client (Netty 3.9.6.Final, 2015-era) cannot complete a handshake against our
server's default TLS 1.3 - see Peer quirks. `server({ tls: { ..., maxVersion: 'TLSv1.2' } })` on
the S10 listener only; the plain listener the window scenarios use is unrestricted, and a Python
`ssl` client confirmed TLS 1.3 itself works before this was traced to the peer.
- One GSM7 encoding footgun in the jsmpp driver's own text fixtures, not in `@larvit/smpp`: the
driver's "gsm7" mode sends plain ASCII bytes for `short_message`, and GSM 03.38's default
alphabet maps ASCII `_` (0x5F) to `§`, not underscore - a message_payload fixture containing `_`
round-tripped as `§` until the character was dropped from the fixture text.
Two runs each of `./interop-tests/run.py jsmpp` and `./interop-tests/run.py cloudhopper`, all four
stable: jsmpp 12/12 both times, Cloudhopper 6/6 both times.
```
jsmpp: frames 37, submit_sm 8/8, query_sm 1/1, cancel_sm 1/1, replace_sm 1/1,
deliver_sm 2/2, enquire_link 2/2, generic_nack 1, malformed 2, expert errors 2
cloudhopper: frames 90-92 (varies slightly run to run - see Peer quirks), bind_transceiver 5/5,
submit_sm/submit_sm_resp present, unbind 4/4, malformed 0, expert errors 0
```
jsmpp's `malformed: 2` / `expert errors: 2` are not a stability problem: they are tshark
independently flagging the same two deliberately-malformed PDUs the "S3" scenarios send on purpose
(the truncated-TLV and short-body reproducers below) - both are genuinely malformed by the spec, so
an independent dissector agreeing is the expected outcome, not a surprise.
## Scenarios (PLAN.md)
| Id | Result | Evidence |
| --- | --- | --- |
| S2 UDH 8-bit (targets 2, 5) | pass | `jsmpp.test.ts` "UDH, 8-bit reference": one reassembled `sms`, segments answered `<base>-1`/`<base>-2` |
| S2 UDH 16-bit (target 5) | pass | `jsmpp.test.ts` "UDH, 16-bit reference": also reassembled - confirms both widths are read |
| S2 `message_payload` (target 2) | pass | `jsmpp.test.ts` "message_payload: one sms, the full text" |
| S2 `sar_*` (target 3) | defect confirmed, second peer | `jsmpp.test.ts` "sar_*: defect (target 3)": two independent `sms` events, not one |
| S3 known-but-unhandled (targets 1, 6) | pass | `jsmpp.test.ts` "query_sm, cancel_sm, replace_sm": `ESME_RINVCMDID`, link survives, jsmpp raises `NegativeResponseException` and keeps going |
| S3 unknown command id (target 1) | pass | `jsmpp.test.ts` "an unknown command id gets generic_nack..." |
| S3 truncated TLV stream (target 1) | pass | `jsmpp.test.ts` "a deliver_sm with a truncated TLV stream..." |
| S3 short body (target 1) | pass | `jsmpp.test.ts` "a deliver_sm whose body is shorter than sm_length declares..." |
| Bind strictness (target 8) | pass, quirk noted | `jsmpp.test.ts` "bind version negotiation": 0x34 gets `sc_interface_version` back, 0x33 gets none; see Peer quirks for jsmpp's own negotiated-version report |
| Refusing status (jsmpp) | pass | `jsmpp.test.ts` "a refusing status is surfaced back to jsmpp" |
| S5 window 1/10/50 (target 11) | pass | `cloudhopper.test.ts` "S5 - window pressure...": all answered, no id answered twice, peak window never exceeds the configured size |
| S5 request expiry (target 11) | pass | `cloudhopper.test.ts` "the peer reports the expiry itself...": Cloudhopper's own window monitor reports it, our side does nothing unusual |
| S10 TLS | pass, quirk noted | `cloudhopper.test.ts` "handshake, bind, submit over TLS" |
| Refusing status (Cloudhopper) | pass | `cloudhopper.test.ts` "a refusing status is surfaced back to Cloudhopper" |
## Defects in @larvit/smpp
### `sar_*` segmentation confirmed unread, from a second independent peer (target 3)
What happened: jsmpp splits a message into two `sar_*`-tagged `submit_sm`s (no UDH, `esm_class`
carries no UDHI bit); each arrives at our server as its own, independent `sms` event carrying only
its own ~half of the text, with its own unrelated generated id - never merged into one message.
Confirms Jasmin's finding (`findings/03-jasmin.md`) from a second, independently-written client.
Spec: SMPP 3.4 5.3.2.16-5.3.2.18 defines `sar_msg_ref_num`/`sar_total_segments`/`sar_segment_seqnum`
as an alternative to the UDH for carrying concatenation; nothing in the spec says a receiver may
ignore it.
Reproducer: `jsmpp.test.ts`, "sar_\*: defect (target 3)" - two `submit_sm`s to the same
`source_addr`/`destination_addr`, `esm_class` 0x00, one `sar_msg_ref_num` (0x77) across both, `1/2`
then `2/2` in `sar_total_segments`/`sar_segment_seqnum`. Severity: as already scoped in PLAN.md
target 3 / phase 10 - a known, tracked limitation, not new.
### A 4-octet truncated TLV tail is silently accepted rather than refused (target 1)
What happened: a `deliver_sm` whose mandatory fields are complete, followed by exactly one bare TLV
header (tag, 2-octet declared length) and *no* value octets at all, is answered `ESME_ROK` and its
mandatory-field text delivered as an ordinary `sms` - the TLV is silently dropped rather than the PDU
being refused with `ESME_RINVTLVSTREAM`, which is what the *same* codec path does correctly when a
few value octets (but still short of the declared length) follow the header instead of none.
Why: `pdu.ts`'s `pduToObj()` tries two parses of every PDU - "plain", and "padded" (some peers add a
trailing NUL after `short_message` for non-UDH text). Here "plain" parsing hits the TLV loop, reads a
length that overruns `command_length`, and correctly errors. But "padded" parsing shifts the TLV
region by one octet (treating the first of the four trailing octets as that padding NUL), leaving
only 3 octets - one short of what `parseTlvs()`'s loop needs even to read a tag+length pair
(`offset + 4 <= cmdLength` is false) - so the loop exits with no error and 3 octets unconsumed
(`aligned` false). `pduToObj()`'s fallback chain then reaches `if (!padded.err) return
{ pduObj: padded.pduObj }`, which accepts a misaligned parse whenever it produced no error, even
though 3 octets of the peer's PDU were never read. The fix is scoped to that fallback, not touched
here per the read-only rule.
Spec: SMPP 3.4 4.3 - a TLV field this codec cannot parse should be refused with
`ESME_RINVTLVSTREAM` (5.0's name; 3.4 spells it `ESME_RINVOPTPARSTREAM`), the same as the sibling
case with a few value octets present.
Reproducer (raw hex, sent after an ordinary `bind_transceiver`; independently reproduced with a
plain Python socket, no Java involved):
```
000000460000000500000000000000630000007261772d66726f6d0000007261772d746f00000000000000000000137472756e636174656420746c762070726f6265001d00c8
```
This is a `deliver_sm` (`source_addr` `raw-from`, `destination_addr` `raw-to`, body "truncated tlv
probe silent") followed by `00 1d 00 c8` - tag `0x001D`, declared length 200, zero value octets.
Our server answers `command_status 0x00000000` (`ESME_ROK`) and delivers the text as `sms`.
Appending 4 more arbitrary octets to the same tail (8 total, still declaring length 200) correctly
triggers `ESME_RINVTLVSTREAM` instead - `jsmpp.test.ts`'s "a deliver_sm with a truncated TLV stream"
test uses that 8-octet form deliberately, to test the *documented* refusal path rather than this
adjacent bug. Reproduced with jsmpp's own driver too:
`jsmpp.test.ts`, "defect: a 4-octet truncated TLV tail is silently accepted rather than refused" -
same bytes, over a `net.Socket` opened directly against `server()` (not through jsmpp's typed API,
which cannot build this shape at all). Severity: low - a narrow boundary condition (exactly 4
trailing octets, no value) rather than a general TLV-validation gap, but it is a hole in the fix
target 1 otherwise closed, silently dropping a TLV the peer meant to send instead of losing (and
counting) the one malformed PDU.
## Peer quirks
- **jsmpp's `session.getInterfaceVersion()` echoes what the driver declared, not what the earlier
research pass expected.** `research/esme-clients-and-validators.md` A2 quotes jsmpp's own source
(`scVersion != null ? IF_50.min(valueOf(scVersion)) : IF_34`) as defaulting to 3.4 whenever the
server's `bind_resp` omits `sc_interface_version`. Binding at 0x33 against our server (which
omits the TLV for a pre-3.4 peer) and reading `session.getInterfaceVersion()` back gives `0x33`,
not `0x34` - this getter does not visibly take that fallback branch here. Recorded as observed;
whether jsmpp's *internal* negotiated-version state (used, per its source, to decide whether to
attach optional parameters to requests it sends) differs from what this getter reports is not
established either way.
- **jsmpp accepts every one of our target-1/6 answers without closing the link.** `query_sm`,
`cancel_sm` and `replace_sm` each raise a catchable `NegativeResponseException` carrying
`ESME_RINVCMDID` (0x00000003); the session stays `BOUND_TRX` afterward (confirmed with a
follow-up `enquire_link`). A strict, actively-maintained Java client tolerates the exact answers
the interop plan's fixes promise.
- **Cloudhopper's SSL client (Netty 3.9.6.Final, last touched 2018) cannot complete a TLS 1.3
handshake.** `setUseSsl(true)` against our server's default listener fails immediately with
`org.jboss.netty.handler.ssl.NotSslRecordException: not an SSL/TLS record`, on the very first
record. A plain Python `ssl.SSLContext` client handshakes the same listener at TLS 1.3 without
issue, isolating the incompatibility to Cloudhopper's decade-old SSL stack rather than our
server. Capping the S10 listener at `maxVersion: 'TLSv1.2'` resolves it completely - bind,
submit and response all succeed. Not attempted: whether an older JRE for the *driver* (rather
than capping the server) would let Cloudhopper negotiate TLS 1.3 on its own terms.
- **Cloudhopper's window-monitor expiry and its own per-call timeout are different exceptions.**
Setting `requestExpiryTimeout` shorter than how long our (deliberately slow) handler holds a
message completes the blocking `session.submit(pdu, timeoutMs)` call early with
`RecoverablePduException`, distinct from the `SmppTimeoutException` a plain `timeoutMs` expiry
raises - worth telling apart in anything scripting around Cloudhopper's timeouts. Our side does
nothing unusual: the held message is answered on its own schedule, over the still-open socket,
once our slow handler gets to it; nothing server-side errors or is left in a half-finished state.
- **tshark's per-frame JSON export undercounts `submit_sm` frames under a tight concurrent
Cloudhopper burst on one TCP connection**, e.g. 90-92 total frames decoded across two otherwise
identical runs of the same test file (`dumpcap` itself reports zero drops: "Packets
received/dropped on interface 'any': 200/0"). Not chased further - `malformed`/`expert errors`
are unaffected (both 0 on every run), and the S5 assertions rely on the driver's own structured
per-request results, not the tshark histogram, for exactly this reason.
## Open questions
- Whether jsmpp's own negotiated-version fallback (the `IF_34` branch in its source) is reachable
through any observable other than `getInterfaceVersion()` - not established this phase.
- Whether the tshark frame undercount under a Cloudhopper burst is specific to `-T json` batch
export, or would also show up reading the same capture interactively - not investigated, time-
boxed.
+345
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@@ -0,0 +1,345 @@
import assert from 'node:assert/strict';
import net from 'node:net';
import test, { after, describe } from 'node:test';
import type { Session } from '../src/session.ts';
import type { Sms } from '../src/sms.ts';
import { PduRefusedError } from '../src/index.ts';
import { server } from '../src/server.ts';
const JSMPP_HOST = process.env.JSMPP_HOST ?? 'jsmpp:8080';
const SMPP_PORT = Number(process.env.SMPP_PORT ?? '2775');
function delay(ms: number): Promise<void> {
return new Promise(resolve => { setTimeout(resolve, ms); });
}
async function waitFor<T>(get: () => T | undefined, budget = 8000): Promise<T | undefined> {
const deadline = Date.now() + budget;
let value = get();
while (value === undefined && Date.now() < deadline) {
await delay(20);
value = get();
}
return value;
}
type DriverResult = Record<string, unknown>;
/** The jsmpp driver's own HTTP command channel - one bound session or raw socket per `session`/`raw` name. */
async function driver(path: string, params: Record<string, string> = {}): Promise<DriverResult> {
const url = `http://${JSMPP_HOST}${path}?${new URLSearchParams(params).toString()}`;
const response = await fetch(url);
return response.json() as Promise<DriverResult>;
}
const allSms: { session: Session; sms: Sms }[] = [];
const allSessionErrors: { err: Error; session: Session }[] = [];
const bindPdus: Record<string, unknown>[] = [];
/** Messages a test answers itself (a refusing status, or asserting on the response) - populate
* before triggering the submit that will carry this exact text, so the global auto-ack never runs. */
const manualTexts = new Set<string>();
const { err: serverErr, server: smpp } = await server({
authenticate: () => true,
idleTimeout: 40_000,
port: SMPP_PORT,
});
assert.equal(serverErr, undefined);
assert.ok(smpp);
const smppServer = smpp;
smppServer.on('session', session => {
session.on('incomingPduObj', pduObj => {
if (pduObj.cmdName.startsWith('bind_')) bindPdus.push(pduObj.params);
});
session.on('sms', sms => {
allSms.push({ session, sms });
if (!manualTexts.has(sms.message)) void sms.sendResp();
});
session.on('sessionError', err => { allSessionErrors.push({ err, session }); });
});
after(async () => {
await smppServer.close();
});
async function waitForSms(message: string, budget = 8000): Promise<Sms> {
const found = await waitFor(() => allSms.find(entry => entry.sms.message === message)?.sms, budget);
assert.ok(found, `no sms carrying ${JSON.stringify(message)} arrived (seen: ${JSON.stringify(allSms.map(e => e.sms.message))})`);
return found;
}
async function waitForSessions(count: number, budget = 15_000): Promise<Session[]> {
const found = await waitFor(() => ([...smppServer.sessions].length >= count ? [...smppServer.sessions] : undefined), budget);
assert.ok(found, `no ${String(count)} session(s) bound within ${String(budget)}ms`);
return found;
}
describe('bind version negotiation (target 8)', () => {
test('0x34: our bind_resp carries sc_interface_version, jsmpp negotiates 3.4', async () => {
const result = await driver('/bind', { interfaceVersion: '52', password: 'jsmpppw', session: 'v34', systemId: 'jsmpp-v34' });
assert.equal(result.ok, true);
assert.equal(result.negotiatedInterfaceVersion, 52);
await waitForSessions(1);
const bind = await waitFor(() => bindPdus.find(p => p.system_id === 'jsmpp-v34'));
assert.ok(bind);
assert.equal(bind.interface_version, 0x34);
});
test('0x33: our bind_resp carries no TLVs, and jsmpp reports back what it asked for', async () => {
const result = await driver('/bind', { interfaceVersion: '51', password: 'jsmpppw', session: 'v33', systemId: 'jsmpp-v33' });
assert.equal(result.ok, true);
// jsmpp's session.getInterfaceVersion() simply echoes what the driver declared - it does not
// visibly fall back to 3.4 here despite the absent sc_interface_version TLV, which is the
// opposite of what its own source (a scVersion-null branch defaulting to IF_34) suggests.
// Recorded as observed rather than as a confirmation of that code path - see Peer quirks.
assert.equal(result.negotiatedInterfaceVersion, 51);
const bind = await waitFor(() => bindPdus.find(p => p.system_id === 'jsmpp-v33'));
assert.ok(bind);
assert.equal(bind.interface_version, 0x33);
const session = [...smppServer.sessions].find(s => s.peerInterfaceVersion === 0x33);
assert.ok(session);
assert.equal(session.acceptsOptionalParams(), false);
});
});
describe('S2 - long messages in every spelling (targets 2, 3, 5)', () => {
test('UDH, 8-bit reference: one reassembled sms, each segment answered <base>-<n>', async () => {
await waitForSessions(1);
const text = 'u8-'.padEnd(200, 'a');
const result = await driver('/submit', { encoding: 'gsm7', from: '1001', mode: 'udh8', session: 'v34', text, to: '2001' });
assert.equal(result.ok, true);
const segments = result.segments as { messageId: string; part: number; total: number }[];
assert.equal(segments.length, 2);
const sms = await waitForSms(text, 15_000);
assert.equal(sms.answeredOnArrival, true);
assert.equal(segments[0]?.messageId, `${sms.smsId}-1`);
assert.equal(segments[1]?.messageId, `${sms.smsId}-2`);
});
test('UDH, 16-bit reference: also reassembled - our library reads both widths', async () => {
await waitForSessions(1);
const text = 'u16-'.padEnd(200, 'b');
const result = await driver('/submit', { encoding: 'gsm7', from: '1001', mode: 'udh16', session: 'v34', text, to: '2001' });
assert.equal(result.ok, true);
const segments = result.segments as { messageId: string }[];
const sms = await waitForSms(text, 15_000);
assert.equal(sms.answeredOnArrival, true);
assert.equal(segments[0]?.messageId, `${sms.smsId}-1`);
assert.equal(segments[1]?.messageId, `${sms.smsId}-2`);
});
test('message_payload: one sms, the full text', async () => {
await waitForSessions(1);
// No underscore: GSM 03.38's default alphabet maps ASCII 0x5F to section-sign, not "_" -
// the driver's "gsm7" mode sends plain ASCII bytes, so a real underscore round-trips wrong
// on purpose (a GSM7 encoder bug in this fixture, not in @larvit/smpp).
const text = 'payload carries the whole body in one submit sm';
const result = await driver('/submit', { encoding: 'gsm7', from: '1001', mode: 'payload', session: 'v34', text, to: '2001' });
assert.equal(result.ok, true);
const sms = await waitForSms(text);
assert.equal(sms.message, text);
assert.equal(sms.answeredOnArrival, false);
});
test('sar_*: defect (target 3) - each segment reaches the application as its own sms, not one', async () => {
await waitForSessions(1);
const text = 'sar-'.padEnd(200, 'c');
const result = await driver('/submit', { encoding: 'gsm7', from: '1001', mode: 'sar', session: 'v34', text, to: '2001' });
assert.equal(result.ok, true);
const segments = result.segments as { messageId: string; part: number }[];
assert.equal(segments.length, 2);
// Neither segment ever arrives as the whole 200-char text: each is its own ordinary sms
// carrying only its own ~130-char slice, with its own unrelated (non-<base>-<n>) message id.
const first = await waitForSms(text.slice(0, 130), 15_000);
const second = await waitForSms(text.slice(130), 15_000);
assert.equal(first.answeredOnArrival, false);
assert.equal(second.answeredOnArrival, false);
assert.notEqual(first.smsId, second.smsId);
assert.equal(allSms.some(entry => entry.sms.message === text), false);
void first;
void second;
});
});
describe('S3 - known-but-unhandled and malformed commands (targets 1, 6)', () => {
test('query_sm, cancel_sm, replace_sm: ESME_RINVCMDID, link survives, jsmpp accepts the answer', async () => {
await waitForSessions(1);
const errorsBefore = allSessionErrors.length;
for (const path of ['/querySm', '/cancelSm', '/replaceSm']) {
const result = await driver(path, { messageId: '1', session: 'v34' });
assert.equal(result.ok, true);
assert.equal(result.refused, true);
assert.equal(result.commandStatus, 0x0003);
}
// jsmpp itself did not throw or close the link over any of the three refusals.
const link = await driver('/enquireLink', { session: 'v34' });
assert.equal(link.ok, true);
assert.equal(link.sessionState, 'BOUND_TRX');
assert.equal(allSessionErrors.length, errorsBefore);
});
test('an unknown command id gets generic_nack ESME_RINVCMDID, and the link survives', async () => {
await driver('/rawBind', { interfaceVersion: '52', password: 'rawpw', raw: 'malformed', systemId: 'jsmpp-raw' });
const result = await driver('/rawUnknownCommand', { raw: 'malformed' });
const response = result.response as Record<string, unknown>;
assert.equal(response.cmdIdHex, '0x80000000');
assert.equal(response.cmdStatusHex, '0x3');
const refused = await waitFor(() => allSessionErrors.find(e => e.err instanceof PduRefusedError
&& e.err.reason === 'command'));
assert.ok(refused);
const link = await driver('/rawEnquireLink', { raw: 'malformed' });
const linkResponse = link.response as Record<string, unknown>;
assert.equal(linkResponse.cmdStatusHex, '0x0');
});
test('a deliver_sm with a truncated TLV stream gets ESME_RINVTLVSTREAM, link survives', async () => {
const result = await driver('/rawTruncatedTlv', { raw: 'malformed' });
const response = result.response as Record<string, unknown>;
assert.equal(response.cmdIdHex, '0x80000005');
assert.equal(response.cmdStatusHex, '0xc0');
const refused = await waitFor(() => allSessionErrors.find(e => e.err instanceof PduRefusedError && e.err.reason === 'tlvs'));
assert.ok(refused);
});
test('a deliver_sm whose body is shorter than sm_length declares gets ESME_RINVCMDLEN', async () => {
const result = await driver('/rawShortBody', { raw: 'malformed' });
const response = result.response as Record<string, unknown>;
assert.equal(response.cmdIdHex, '0x80000005');
assert.equal(response.cmdStatusHex, '0x2');
const link = await driver('/rawEnquireLink', { raw: 'malformed' });
const linkResponse = link.response as Record<string, unknown>;
assert.equal(linkResponse.cmdStatusHex, '0x0');
});
// Not reachable through jsmpp's own typed API at all (it cannot construct wire garbage) - this is
// a raw fixture opened directly against our server(), discovered while building the reproducers
// above. Kept here rather than in test/ because it was found during, and belongs beside, this
// phase's malformed-PDU work.
test('defect: a 4-octet truncated TLV tail is silently accepted rather than refused', async () => {
await waitForSessions(1);
function cstring(value: string): Buffer {
return Buffer.concat([Buffer.from(value, 'latin1'), Buffer.from([0])]);
}
const msg = Buffer.from('truncated tlv probe silent', 'latin1');
const body = Buffer.concat([
cstring(''), Buffer.from([0, 0]), cstring('raw2-from'),
Buffer.from([0, 0]), cstring('raw2-to'),
Buffer.from([0, 0, 0]), cstring(''), cstring(''),
Buffer.from([0, 0, 0, 0, msg.length]), msg,
// A bare 4-octet TLV header (tag 0x001D, declared length 200) with zero value octets.
Buffer.from([0x00, 0x1D, 0x00, 0xC8]),
]);
const header = Buffer.alloc(16);
header.writeUInt32BE(16 + body.length, 0);
header.writeUInt32BE(0x00000005, 4);
header.writeUInt32BE(0, 8);
header.writeUInt32BE(777, 12);
const sock = net.connect(SMPP_PORT, '127.0.0.1');
await new Promise<void>(resolve => { sock.once('connect', () => { resolve(); }); });
const bindBody = Buffer.concat([cstring('rawverify'), cstring('pw'), cstring(''), Buffer.from([0x34, 0, 0]), cstring('')]);
const bindHeader = Buffer.alloc(16);
bindHeader.writeUInt32BE(16 + bindBody.length, 0);
bindHeader.writeUInt32BE(0x00000009, 4);
bindHeader.writeUInt32BE(0, 8);
bindHeader.writeUInt32BE(1, 12);
sock.write(Buffer.concat([bindHeader, bindBody]));
await new Promise<void>(resolve => { sock.once('data', () => { resolve(); }); });
const responsePromise = new Promise<Buffer>(resolve => { sock.once('data', data => { resolve(data); }); });
sock.write(Buffer.concat([header, body]));
const response = await responsePromise;
const cmdStatus = response.readUInt32BE(8);
// Defect: this should be ESME_RINVTLVSTREAM (0xC0); the codec's trailing-NUL retry instead
// treats the 4 leftover octets as unparsed slack and accepts the PDU as ESME_ROK.
assert.equal(cmdStatus, 0x00000000);
const arrived = await waitForSms('truncated tlv probe silent');
assert.equal(arrived.from, 'raw2-from');
sock.destroy();
});
});
describe('a refusing status is surfaced back to jsmpp', () => {
test('sms.sendResp({ status: "ESME_RMSGQFUL" }) reaches jsmpp as a NegativeResponseException', async () => {
await waitForSessions(1);
const text = 'refuse-me';
manualTexts.add(text);
const submitted = driver('/submit', { encoding: 'gsm7', from: '1001', mode: 'plain', session: 'v34', text, to: '2001' });
const sms = await waitForSms(text);
await sms.sendResp({ status: 'ESME_RMSGQFUL' });
const result = await submitted;
assert.equal(result.ok, true);
assert.equal(result.refused, true);
assert.equal(result.commandStatusHex, '0x' + (0x00000014).toString(16));
});
});
@@ -0,0 +1,55 @@
# cloudhopper-smpp (the fizzed fork) has no published artifact; cloned at a fixed commit and
# installed into the local Maven repo, which the driver build below then depends on.
FROM maven:3.9.11-eclipse-temurin-21 AS cloudhopper-source
RUN apt-get update \
&& apt-get install -y --no-install-recommends git \
&& rm -rf /var/lib/apt/lists/*
ARG CLOUDHOPPER_COMMIT=ae6485a86c968d344bebf0fa180928905b4a8ad1
# The parent pom (fizzed-maven-parent:1.15) hardcodes source/target 1.7 in its own compiler-plugin
# config, which -Dmaven.compiler.source cannot override; ch-smpp's own pom declares no <build> of
# its own, so injecting one here (source/target 8, otherwise unmodified) is the narrowest override.
RUN git clone https://github.com/fizzed/cloudhopper-smpp.git /src \
&& cd /src \
&& git checkout "${CLOUDHOPPER_COMMIT}" \
&& sed -i 's#</project>#<build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-compiler-plugin</artifactId><configuration><source>8</source><target>8</target></configuration></plugin></plugins></build></project>#' pom.xml \
&& mvn -q install -Dmaven.test.skip=true -Dgpg.skip=true -Dmaven.javadoc.skip=true
# A self-signed cert this image trusts, generated at build time - never committed. server.key/crt
# are PEM (for our server()'s own tls option); truststore.jks is what the driver's SSL client trusts.
FROM eclipse-temurin:21.0.8_9-jre-jammy AS certs
RUN apt-get update \
&& apt-get install -y --no-install-recommends openssl \
&& rm -rf /var/lib/apt/lists/*
RUN mkdir -p /certs \
&& openssl req -x509 -newkey rsa:2048 -sha256 -days 3650 -nodes \
-keyout /certs/server.key -out /certs/server.crt -subj "/CN=interop-cloudhopper" \
&& keytool -importcert -noprompt -alias interop -file /certs/server.crt \
-keystore /certs/truststore.jks -storepass changeit \
&& openssl pkcs12 -export -in /certs/server.crt -inkey /certs/server.key \
-out /certs/keystore.p12 -name interop -password pass:changeit
FROM maven:3.9.11-eclipse-temurin-21 AS build
COPY --from=cloudhopper-source /root/.m2 /root/.m2
WORKDIR /driver
COPY pom.xml .
COPY src ./src
RUN mvn -q package -DskipTests
FROM eclipse-temurin:21.0.8_9-jre-jammy AS runtime
WORKDIR /app
COPY --from=build /driver/target/driver.jar ./driver.jar
COPY --from=certs /certs /certs
EXPOSE 8080
# node's test file needs the same server.key/server.crt to configure its own tls option; the
# S10 compose overlay mounts a shared volume at /shared-certs on both this service and node.
ENTRYPOINT ["sh", "-c", "cp /certs/server.key /certs/server.crt /shared-certs/ 2>/dev/null && chmod 644 /shared-certs/server.key /shared-certs/server.crt || true; exec java -jar driver.jar \"$@\"", "--"]
CMD ["node", "2775"]
+52
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@@ -0,0 +1,52 @@
<project xmlns="http://maven.apache.org/POM/4.0.0">
<modelVersion>4.0.0</modelVersion>
<groupId>se.larvit.interop</groupId>
<artifactId>cloudhopper-driver</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.release>17</maven.compiler.release>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.fizzed</groupId>
<artifactId>ch-smpp</artifactId>
<version>5.0.10-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.36</version>
</dependency>
</dependencies>
<build>
<finalName>driver</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.6.2</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>smpp.interop.cloudhopper.Driver</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
@@ -0,0 +1,315 @@
package smpp.interop.cloudhopper;
import com.cloudhopper.smpp.SmppBindType;
import com.cloudhopper.smpp.SmppSession;
import com.cloudhopper.smpp.SmppSessionConfiguration;
import com.cloudhopper.smpp.impl.DefaultSmppClient;
import com.cloudhopper.smpp.impl.DefaultSmppSessionHandler;
import com.cloudhopper.smpp.pdu.PduRequest;
import com.cloudhopper.smpp.pdu.SubmitSm;
import com.cloudhopper.smpp.pdu.SubmitSmResp;
import com.cloudhopper.smpp.ssl.SslConfiguration;
import com.cloudhopper.smpp.type.Address;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpServer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.atomic.AtomicInteger;
/**
* An HTTP-driven Cloudhopper ESME: bind with a chosen window configuration, then fire concurrent
* submits against our (possibly deliberately slow) server and report per-request outcomes and the
* observed send-window occupancy, so the node test file can assert none lost, none duplicated.
*/
public final class Driver {
private static final Logger log = LoggerFactory.getLogger(Driver.class);
private static final Map<String, SmppSession> sessions = new ConcurrentHashMap<>();
private static final AtomicInteger expiredCount = new AtomicInteger(0);
private static DefaultSmppClient client;
private static ScheduledThreadPoolExecutor monitorExecutor;
private static ExecutorService ioExecutor;
private static String host;
private static int port;
private Driver() { }
public static void main(String[] args) throws IOException {
host = args.length > 0 ? args[0] : "node";
port = args.length > 1 ? Integer.parseInt(args[1]) : 2775;
ioExecutor = Executors.newCachedThreadPool();
monitorExecutor = new ScheduledThreadPoolExecutor(2);
client = new DefaultSmppClient(Executors.newCachedThreadPool(), 50, monitorExecutor);
HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
server.createContext("/health", exchange -> respond(exchange, 200, "{\"ok\":true}"));
server.createContext("/bind", Driver::handleBind);
server.createContext("/unbind", Driver::handleUnbind);
server.createContext("/submit", Driver::handleSubmit);
server.createContext("/windowBurst", Driver::handleWindowBurst);
server.createContext("/sendWindowSize", Driver::handleSendWindowSize);
server.setExecutor(null);
server.start();
System.out.println("cloudhopper driver listening on 8080, target " + host + ":" + port);
}
// --- HTTP plumbing (same shape as the jsmpp driver's, kept independent on purpose) ---
private static Map<String, String> queryParams(HttpExchange exchange) {
Map<String, String> params = new LinkedHashMap<>();
String query = exchange.getRequestURI().getRawQuery();
if (query == null) return params;
for (String pair : query.split("&")) {
int eq = pair.indexOf('=');
String key = eq < 0 ? pair : pair.substring(0, eq);
String value = eq < 0 ? "" : URLDecoder.decode(pair.substring(eq + 1), StandardCharsets.UTF_8);
params.put(key, value);
}
return params;
}
private static void respond(HttpExchange exchange, int status, String body) {
try {
byte[] bytes = body.getBytes(StandardCharsets.UTF_8);
exchange.getResponseHeaders().add("Content-Type", "application/json");
exchange.sendResponseHeaders(status, bytes.length);
try (OutputStream out = exchange.getResponseBody()) {
out.write(bytes);
}
} catch (IOException e) {
// The client gave up reading; nothing left to answer.
}
}
private static void respondOk(HttpExchange exchange, Map<String, Object> result) {
respond(exchange, 200, Json.write(result));
}
private static void respondErr(HttpExchange exchange, Exception e) {
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", false);
result.put("errorClass", e.getClass().getName());
result.put("error", String.valueOf(e.getMessage()));
respond(exchange, 200, Json.write(result));
}
// --- handlers ---
private static void handleBind(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
String name = p.getOrDefault("session", "default");
try {
SmppSessionConfiguration config = new SmppSessionConfiguration();
config.setName(name);
config.setType(SmppBindType.TRANSCEIVER);
config.setHost(p.getOrDefault("host", host));
config.setPort(Integer.parseInt(p.getOrDefault("port", String.valueOf(port))));
config.setConnectTimeout(10_000);
config.setSystemId(p.getOrDefault("systemId", "cloudhopper"));
config.setPassword(p.getOrDefault("password", "chpw"));
config.setWindowSize(Integer.parseInt(p.getOrDefault("windowSize", "1")));
config.setRequestExpiryTimeout(Long.parseLong(p.getOrDefault("requestExpiryTimeout", "30000")));
config.setWindowMonitorInterval(Long.parseLong(p.getOrDefault("windowMonitorInterval", "15000")));
config.setCountersEnabled(true);
if (Boolean.parseBoolean(p.getOrDefault("useSsl", "false"))) {
// Cloudhopper's SslContextFactory only skips keystore loading when *neither* store is
// configured - a trust-store-only client falls through to loadKeyStore() with a null
// path and fails, so the build-time self-signed cert also gets used as the (otherwise
// unneeded) client keystore.
SslConfiguration ssl = new SslConfiguration();
ssl.setTrustStorePath("/certs/truststore.jks");
ssl.setTrustStorePassword("changeit");
ssl.setKeyStorePath("/certs/keystore.p12");
ssl.setKeyStorePassword("changeit");
ssl.setKeyStoreType("PKCS12");
config.setUseSsl(true);
config.setSslConfiguration(ssl);
}
DefaultSmppSessionHandler handler = new DefaultSmppSessionHandler(log) {
@Override
public void firePduRequestExpired(PduRequest pduRequest) {
expiredCount.incrementAndGet();
log.warn("PDU request expired in window monitor: {}", pduRequest);
}
};
SmppSession session = client.bind(config, handler);
sessions.put(name, session);
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static void handleUnbind(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SmppSession session = sessions.remove(p.getOrDefault("session", "default"));
try {
if (session != null) {
session.unbind(5000);
session.destroy();
}
respondOk(exchange, Map.of("ok", true));
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static SubmitSm buildSubmit(String from, String to, String text)
throws com.cloudhopper.smpp.type.SmppInvalidArgumentException {
SubmitSm submit = new SubmitSm();
submit.setSourceAddress(new Address((byte) 0x01, (byte) 0x01, from));
submit.setDestAddress(new Address((byte) 0x01, (byte) 0x01, to));
submit.setShortMessage(text.getBytes(StandardCharsets.US_ASCII));
return submit;
}
private static void handleSubmit(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SmppSession session = sessions.get(p.getOrDefault("session", "default"));
if (session == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such session")));
return;
}
try {
long timeoutMs = Long.parseLong(p.getOrDefault("timeoutMs", "10000"));
long start = System.currentTimeMillis();
SubmitSmResp resp = session.submit(
buildSubmit(p.getOrDefault("from", "1000"), p.getOrDefault("to", "2000"), p.getOrDefault("text", "hi")),
timeoutMs);
long elapsed = System.currentTimeMillis() - start;
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("messageId", resp.getMessageId());
result.put("commandStatus", resp.getCommandStatus());
result.put("elapsedMs", (int) elapsed);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
/** Fires `count` submits at once, each tagged by index in its text, to probe window pressure. */
private static void handleWindowBurst(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SmppSession session = sessions.get(p.getOrDefault("session", "default"));
if (session == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such session")));
return;
}
int count = Integer.parseInt(p.getOrDefault("count", "10"));
long timeoutMs = Long.parseLong(p.getOrDefault("timeoutMs", "60000"));
String from = p.getOrDefault("from", "1000");
String to = p.getOrDefault("to", "2000");
String prefix = p.getOrDefault("prefix", "burst");
AtomicInteger peakWindow = new AtomicInteger(0);
Thread sampler = new Thread(() -> {
while (!Thread.currentThread().isInterrupted()) {
try {
int size = session.getSendWindow().getSize();
peakWindow.updateAndGet(prev -> Math.max(prev, size));
Thread.sleep(10);
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
});
sampler.setDaemon(true);
sampler.start();
List<Future<Map<String, Object>>> futures = new ArrayList<>();
for (int i = 0; i < count; i++) {
int index = i;
futures.add(ioExecutor.submit((Callable<Map<String, Object>>) () -> {
Map<String, Object> entry = new LinkedHashMap<>();
entry.put("index", index);
try {
long start = System.currentTimeMillis();
SubmitSmResp resp = session.submit(buildSubmit(from, to, prefix + "-" + index), timeoutMs);
entry.put("ok", true);
entry.put("messageId", resp.getMessageId());
entry.put("elapsedMs", (int) (System.currentTimeMillis() - start));
} catch (Exception e) {
entry.put("ok", false);
entry.put("errorClass", e.getClass().getSimpleName());
entry.put("error", String.valueOf(e.getMessage()));
}
return entry;
}));
}
List<Object> results = new ArrayList<>();
for (Future<Map<String, Object>> f : futures) {
try {
results.add(f.get());
} catch (Exception e) {
results.add(Map.of("ok", false, "error", String.valueOf(e.getMessage())));
}
}
sampler.interrupt();
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("results", results);
result.put("peakWindowSize", peakWindow.get());
result.put("expiredCount", expiredCount.get());
respondOk(exchange, result);
}
private static void handleSendWindowSize(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SmppSession session = sessions.get(p.getOrDefault("session", "default"));
if (session == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such session")));
return;
}
respondOk(exchange, Map.of("ok", true, "size", session.getSendWindow().getSize()));
}
}
@@ -0,0 +1,75 @@
package smpp.interop.cloudhopper;
import java.util.List;
import java.util.Map;
/** A minimal JSON writer for the driver's own controlled output - no parsing needed. */
final class Json {
private Json() { }
static String write(Object value) {
StringBuilder sb = new StringBuilder();
writeValue(sb, value);
return sb.toString();
}
@SuppressWarnings("unchecked")
private static void writeValue(StringBuilder sb, Object value) {
if (value == null) {
sb.append("null");
} else if (value instanceof String s) {
writeString(sb, s);
} else if (value instanceof Boolean || value instanceof Integer || value instanceof Long) {
sb.append(value);
} else if (value instanceof Map<?, ?> map) {
sb.append('{');
boolean first = true;
for (Map.Entry<?, ?> entry : map.entrySet()) {
if (!first) sb.append(',');
first = false;
writeString(sb, String.valueOf(entry.getKey()));
sb.append(':');
writeValue(sb, entry.getValue());
}
sb.append('}');
} else if (value instanceof List<?> list) {
sb.append('[');
boolean first = true;
for (Object item : list) {
if (!first) sb.append(',');
first = false;
writeValue(sb, item);
}
sb.append(']');
} else if (value instanceof byte[] bytes) {
writeString(sb, hex(bytes));
} else {
writeString(sb, String.valueOf(value));
}
}
private static void writeString(StringBuilder sb, String s) {
sb.append('"');
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case '"' -> sb.append("\\\"");
case '\\' -> sb.append("\\\\");
case '\n' -> sb.append("\\n");
case '\r' -> sb.append("\\r");
case '\t' -> sb.append("\\t");
default -> {
if (c < 0x20) sb.append(String.format("\\u%04x", (int) c));
else sb.append(c);
}
}
}
sb.append('"');
}
static String hex(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 2);
for (byte b : bytes) sb.append(String.format("%02x", b));
return sb.toString();
}
}
+32
View File
@@ -0,0 +1,32 @@
# jsmpp has no published artifact for this pin; cloned at a fixed commit and installed into the
# local Maven repo, which the driver build below then depends on.
FROM maven:3.9.11-eclipse-temurin-21 AS jsmpp-source
RUN apt-get update \
&& apt-get install -y --no-install-recommends git \
&& rm -rf /var/lib/apt/lists/*
ARG JSMPP_COMMIT=a24db96ad7014cdc84a3eebfa64a75c362daef2a
RUN git clone https://github.com/opentelecoms-org/jsmpp.git /src \
&& cd /src \
&& git checkout "${JSMPP_COMMIT}" \
&& mvn -q -pl jsmpp -am install -DskipTests -Dgpg.skip=true
FROM maven:3.9.11-eclipse-temurin-21 AS build
COPY --from=jsmpp-source /root/.m2 /root/.m2
WORKDIR /driver
COPY pom.xml .
COPY src ./src
RUN mvn -q package -DskipTests
FROM eclipse-temurin:21.0.8_9-jre-jammy AS runtime
WORKDIR /app
COPY --from=build /driver/target/driver.jar ./driver.jar
EXPOSE 8080
ENTRYPOINT ["java", "-jar", "driver.jar"]
CMD ["node", "2775"]
+47
View File
@@ -0,0 +1,47 @@
<project xmlns="http://maven.apache.org/POM/4.0.0">
<modelVersion>4.0.0</modelVersion>
<groupId>se.larvit.interop</groupId>
<artifactId>jsmpp-driver</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>
<properties>
<maven.compiler.release>21</maven.compiler.release>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.jsmpp</groupId>
<artifactId>jsmpp</artifactId>
<version>3.0.3-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<finalName>driver</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.6.2</version>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass>smpp.interop.jsmpp.Driver</mainClass>
</transformer>
</transformers>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
@@ -0,0 +1,471 @@
package smpp.interop.jsmpp;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import org.jsmpp.InvalidResponseException;
import org.jsmpp.PDUException;
import org.jsmpp.bean.Alphabet;
import org.jsmpp.bean.AlertNotification;
import org.jsmpp.bean.BindType;
import org.jsmpp.bean.DataSm;
import org.jsmpp.bean.DeliverSm;
import org.jsmpp.bean.ESMClass;
import org.jsmpp.bean.GeneralDataCoding;
import org.jsmpp.bean.NumberingPlanIndicator;
import org.jsmpp.bean.OptionalParameter;
import org.jsmpp.bean.RegisteredDelivery;
import org.jsmpp.bean.SMSCDeliveryReceipt;
import org.jsmpp.bean.TypeOfNumber;
import org.jsmpp.bean.InterfaceVersion;
import org.jsmpp.extra.NegativeResponseException;
import org.jsmpp.extra.ProcessRequestException;
import org.jsmpp.extra.ResponseTimeoutException;
import org.jsmpp.session.BindParameter;
import org.jsmpp.session.MessageReceiverListener;
import org.jsmpp.session.QuerySmResult;
import org.jsmpp.session.SMPPSession;
import org.jsmpp.session.Session;
import org.jsmpp.session.SubmitSmResult;
import java.io.IOException;
import java.io.OutputStream;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.URLDecoder;
import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* An HTTP-driven jsmpp ESME: each request binds (if needed), performs one scenario action against
* the SMPP server named by host/port args, and answers with the result as JSON. Kept alive as one
* process so a session can be reused across several requests, the way a real ESME would.
*/
public final class Driver {
private static final Map<String, SMPPSession> sessions = new ConcurrentHashMap<>();
private static final Map<String, Integer> requestedVersions = new ConcurrentHashMap<>();
private static final Map<String, Socket> rawSockets = new ConcurrentHashMap<>();
private static final Map<String, Integer> rawSeqNr = new ConcurrentHashMap<>();
private static String host;
private static int port;
private Driver() { }
public static void main(String[] args) throws IOException {
host = args.length > 0 ? args[0] : "node";
port = args.length > 1 ? Integer.parseInt(args[1]) : 2775;
HttpServer server = HttpServer.create(new InetSocketAddress(8080), 0);
server.createContext("/health", exchange -> respond(exchange, 200, "{\"ok\":true}"));
server.createContext("/bind", Driver::handleBind);
server.createContext("/unbind", Driver::handleUnbind);
server.createContext("/enquireLink", Driver::handleEnquireLink);
server.createContext("/submit", Driver::handleSubmit);
server.createContext("/querySm", exchange -> handleUnhandledCommand(exchange, "query"));
server.createContext("/cancelSm", exchange -> handleUnhandledCommand(exchange, "cancel"));
server.createContext("/replaceSm", exchange -> handleUnhandledCommand(exchange, "replace"));
server.createContext("/rawBind", Driver::handleRawBind);
server.createContext("/rawUnknownCommand", exchange -> handleRawAction(exchange, RawSmpp::unknownCommandPdu));
server.createContext("/rawTruncatedTlv", exchange -> handleRawAction(exchange, RawSmpp::truncatedTlvDeliverSmPdu));
server.createContext("/rawShortBody", exchange -> handleRawAction(exchange, RawSmpp::shortBodyDeliverSmPdu));
server.createContext("/rawEnquireLink", exchange -> handleRawAction(exchange, RawSmpp::enquireLinkPdu));
server.setExecutor(null);
server.start();
System.out.println("jsmpp driver listening on 8080, target " + host + ":" + port);
}
// --- HTTP plumbing ---
private static Map<String, String> queryParams(HttpExchange exchange) {
Map<String, String> params = new LinkedHashMap<>();
String query = exchange.getRequestURI().getRawQuery();
if (query == null) return params;
for (String pair : query.split("&")) {
int eq = pair.indexOf('=');
String key = eq < 0 ? pair : pair.substring(0, eq);
String value = eq < 0 ? "" : URLDecoder.decode(pair.substring(eq + 1), StandardCharsets.UTF_8);
params.put(key, value);
}
return params;
}
private static void respond(HttpExchange exchange, int status, String body) {
try {
byte[] bytes = body.getBytes(StandardCharsets.UTF_8);
exchange.getResponseHeaders().add("Content-Type", "application/json");
exchange.sendResponseHeaders(status, bytes.length);
try (OutputStream out = exchange.getResponseBody()) {
out.write(bytes);
}
} catch (IOException e) {
// The client gave up reading; nothing left to answer.
}
}
private static void respondOk(HttpExchange exchange, Map<String, Object> result) {
respond(exchange, 200, Json.write(result));
}
private static void respondErr(HttpExchange exchange, Exception e) {
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", false);
result.put("errorClass", e.getClass().getName());
result.put("error", String.valueOf(e.getMessage()));
if (e instanceof NegativeResponseException nre) {
result.put("commandStatus", nre.getCommandStatus());
result.put("commandStatusHex", "0x" + Integer.toHexString(nre.getCommandStatus()));
}
respond(exchange, 200, Json.write(result));
}
// --- jsmpp-backed handlers ---
private static void handleBind(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
String name = p.getOrDefault("session", "default");
try {
SMPPSession session = new SMPPSession();
session.setMessageReceiverListener(new NoopListener());
String type = p.getOrDefault("type", "transceiver");
BindType bindType = switch (type) {
case "receiver" -> BindType.BIND_RX;
case "transmitter" -> BindType.BIND_TX;
default -> BindType.BIND_TRX;
};
int ifVersion = Integer.parseInt(p.getOrDefault("interfaceVersion", "52"));
InterfaceVersion interfaceVersion = InterfaceVersion.valueOf((byte) ifVersion);
String systemId = p.getOrDefault("systemId", "jsmpp");
String password = p.getOrDefault("password", "jsmpppw");
BindParameter bindParameter = new BindParameter(bindType, systemId, password, "interop",
TypeOfNumber.UNKNOWN, NumberingPlanIndicator.UNKNOWN, null, interfaceVersion);
String scSystemId = session.connectAndBind(host, port, bindParameter);
sessions.put(name, session);
requestedVersions.put(name, ifVersion);
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("scSystemId", scSystemId);
result.put("requestedInterfaceVersion", ifVersion);
result.put("negotiatedInterfaceVersion", session.getInterfaceVersion().value() & 0xFF);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static void handleUnbind(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SMPPSession session = sessions.remove(p.getOrDefault("session", "default"));
try {
if (session != null) session.unbindAndClose();
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static void handleEnquireLink(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SMPPSession session = sessions.get(p.getOrDefault("session", "default"));
Map<String, Object> result = new LinkedHashMap<>();
if (session == null) {
result.put("ok", false);
result.put("error", "no such session");
respondOk(exchange, result);
return;
}
result.put("ok", true);
result.put("sessionState", session.getSessionState().name());
respondOk(exchange, result);
}
private static byte[] encode(String text, String encoding) {
return switch (encoding) {
case "ucs2" -> text.getBytes(StandardCharsets.UTF_16BE);
case "latin1" -> text.getBytes(StandardCharsets.ISO_8859_1);
default -> text.getBytes(StandardCharsets.US_ASCII);
};
}
private static GeneralDataCoding dataCoding(String encoding) {
Alphabet alphabet = switch (encoding) {
case "ucs2" -> Alphabet.ALPHA_UCS2;
case "latin1" -> Alphabet.ALPHA_LATIN1;
default -> Alphabet.ALPHA_DEFAULT;
};
return new GeneralDataCoding(alphabet, null, false);
}
/** Chunk size chosen well under any segment limit for every encoding this driver sends. */
private static final int CHUNK_CHARS = 130;
private static void handleSubmit(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
SMPPSession session = sessions.get(p.getOrDefault("session", "default"));
if (session == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such session")));
return;
}
String from = p.getOrDefault("from", "12345");
String to = p.getOrDefault("to", "67890");
String text = p.getOrDefault("text", "hello");
String mode = p.getOrDefault("mode", "plain");
String encoding = p.getOrDefault("encoding", "gsm7");
try {
java.util.List<Map<String, Object>> segments = new java.util.ArrayList<>();
switch (mode) {
case "udh8" -> submitUdh(session, from, to, text, encoding, false, segments);
case "udh16" -> submitUdh(session, from, to, text, encoding, true, segments);
case "sar" -> submitSar(session, from, to, text, encoding, segments);
case "payload" -> submitPayload(session, from, to, text, encoding, segments);
default -> submitPlain(session, from, to, text, encoding, segments);
}
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("segments", segments);
respondOk(exchange, result);
} catch (NegativeResponseException e) {
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("refused", true);
result.put("commandStatus", e.getCommandStatus());
result.put("commandStatusHex", "0x" + Integer.toHexString(e.getCommandStatus()));
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static void submitPlain(SMPPSession session, String from, String to, String text, String encoding,
java.util.List<Map<String, Object>> segments) throws Exception {
SubmitSmResult r = session.submitShortMessage("CMT",
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, from,
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, to,
new ESMClass(), (byte) 0, (byte) 1, null, null,
new RegisteredDelivery(SMSCDeliveryReceipt.DEFAULT), (byte) 0, dataCoding(encoding), (byte) 0,
encode(text, encoding));
segments.add(Map.of("messageId", r.getMessageId()));
}
private static java.util.List<String> chunk(String text, int size) {
java.util.List<String> out = new java.util.ArrayList<>();
for (int i = 0; i < text.length(); i += size) {
out.add(text.substring(i, Math.min(text.length(), i + size)));
}
return out;
}
private static void submitUdh(SMPPSession session, String from, String to, String text, String encoding,
boolean sixteenBit, java.util.List<Map<String, Object>> segments) throws Exception {
java.util.List<String> chunks = chunk(text, CHUNK_CHARS);
int reference = sixteenBit ? 0x1234 : 0x42;
int total = chunks.size();
for (int i = 0; i < chunks.size(); i++) {
byte[] chunkBytes = encode(chunks.get(i), encoding);
byte[] udh = sixteenBit
? new byte[] { 0x06, 0x08, 0x04, (byte) ((reference >> 8) & 0xFF), (byte) (reference & 0xFF), (byte) total, (byte) (i + 1) }
: new byte[] { 0x05, 0x00, 0x03, (byte) reference, (byte) total, (byte) (i + 1) };
byte[] shortMessage = new byte[udh.length + chunkBytes.length];
System.arraycopy(udh, 0, shortMessage, 0, udh.length);
System.arraycopy(chunkBytes, 0, shortMessage, udh.length, chunkBytes.length);
SubmitSmResult r = session.submitShortMessage("CMT",
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, from,
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, to,
new ESMClass(0x40), (byte) 0, (byte) 1, null, null,
new RegisteredDelivery(SMSCDeliveryReceipt.DEFAULT), (byte) 0, dataCoding(encoding), (byte) 0,
shortMessage);
segments.add(Map.of("messageId", r.getMessageId(), "part", i + 1, "total", total));
}
}
private static void submitSar(SMPPSession session, String from, String to, String text, String encoding,
java.util.List<Map<String, Object>> segments) throws Exception {
java.util.List<String> chunks = chunk(text, CHUNK_CHARS);
int reference = 0x77;
int total = chunks.size();
for (int i = 0; i < chunks.size(); i++) {
byte[] chunkBytes = encode(chunks.get(i), encoding);
OptionalParameter refNum = new OptionalParameter.Sar_msg_ref_num((short) reference);
OptionalParameter totalSegments = new OptionalParameter.Sar_total_segments((byte) total);
OptionalParameter seqNum = new OptionalParameter.Sar_segment_seqnum((byte) (i + 1));
SubmitSmResult r = session.submitShortMessage("CMT",
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, from,
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, to,
new ESMClass(), (byte) 0, (byte) 1, null, null,
new RegisteredDelivery(SMSCDeliveryReceipt.DEFAULT), (byte) 0, dataCoding(encoding), (byte) 0,
chunkBytes, refNum, totalSegments, seqNum);
segments.add(Map.of("messageId", r.getMessageId(), "part", i + 1, "total", total));
}
}
private static void submitPayload(SMPPSession session, String from, String to, String text, String encoding,
java.util.List<Map<String, Object>> segments) throws Exception {
byte[] payload = encode(text, encoding);
OptionalParameter messagePayload = new OptionalParameter.Message_payload(payload);
SubmitSmResult r = session.submitShortMessage("CMT",
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, from,
TypeOfNumber.INTERNATIONAL, NumberingPlanIndicator.UNKNOWN, to,
new ESMClass(), (byte) 0, (byte) 1, null, null,
new RegisteredDelivery(SMSCDeliveryReceipt.DEFAULT), (byte) 0, dataCoding(encoding), (byte) 0,
new byte[0], messagePayload);
segments.add(Map.of("messageId", r.getMessageId()));
}
private static void handleUnhandledCommand(HttpExchange exchange, String which) {
Map<String, String> p = queryParams(exchange);
SMPPSession session = sessions.get(p.getOrDefault("session", "default"));
String messageId = p.getOrDefault("messageId", "0");
if (session == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such session")));
return;
}
try {
switch (which) {
case "query" -> {
QuerySmResult r = session.queryShortMessage(messageId, TypeOfNumber.INTERNATIONAL,
NumberingPlanIndicator.UNKNOWN, "12345");
respondOk(exchange, Map.of("ok", true, "refused", false, "finalDate", String.valueOf(r.getFinalDate())));
}
case "cancel" -> {
session.cancelShortMessage("CMT", messageId, TypeOfNumber.INTERNATIONAL,
NumberingPlanIndicator.UNKNOWN, "12345", TypeOfNumber.INTERNATIONAL,
NumberingPlanIndicator.UNKNOWN, "67890");
respondOk(exchange, Map.of("ok", true, "refused", false));
}
case "replace" -> {
session.replaceShortMessage(messageId, TypeOfNumber.INTERNATIONAL,
NumberingPlanIndicator.UNKNOWN, "12345", null, null,
new RegisteredDelivery(SMSCDeliveryReceipt.DEFAULT), (byte) 0, "replacement".getBytes(StandardCharsets.US_ASCII));
respondOk(exchange, Map.of("ok", true, "refused", false));
}
default -> respond(exchange, 400, "{}");
}
} catch (NegativeResponseException e) {
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("refused", true);
result.put("commandStatus", e.getCommandStatus());
result.put("commandStatusHex", "0x" + Integer.toHexString(e.getCommandStatus()));
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
// --- raw-socket handlers, for PDUs jsmpp's typed API cannot construct ---
private static void handleRawBind(HttpExchange exchange) {
Map<String, String> p = queryParams(exchange);
String name = p.getOrDefault("raw", "default");
try {
Socket sock = new Socket();
sock.connect(new InetSocketAddress(host, port), 5000);
int ifVersion = Integer.parseInt(p.getOrDefault("interfaceVersion", "52"));
int seqNr = 1;
RawSmpp.write(sock, RawSmpp.bindTransceiverPdu(
p.getOrDefault("systemId", "rawjsmpp"), p.getOrDefault("password", "rawpw"), ifVersion, seqNr));
Map<String, Object> resp = RawSmpp.readOne(sock, 5000);
rawSockets.put(name, sock);
rawSeqNr.put(name, seqNr + 1);
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("bindResp", resp);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private interface PduBuilder {
byte[] build(int seqNr);
}
private static void handleRawAction(HttpExchange exchange, PduBuilder builder) {
Map<String, String> p = queryParams(exchange);
String name = p.getOrDefault("raw", "default");
Socket sock = rawSockets.get(name);
if (sock == null) {
respond(exchange, 200, Json.write(Map.of("ok", false, "error", "no such raw socket - call rawBind first")));
return;
}
try {
int seqNr = rawSeqNr.getOrDefault(name, 1);
RawSmpp.write(sock, builder.build(seqNr));
rawSeqNr.put(name, seqNr + 1);
Map<String, Object> resp = RawSmpp.readOne(sock, 5000);
Map<String, Object> result = new LinkedHashMap<>();
result.put("ok", true);
result.put("response", resp);
respondOk(exchange, result);
} catch (Exception e) {
respondErr(exchange, e);
}
}
private static final class NoopListener implements MessageReceiverListener {
@Override
public void onAcceptDeliverSm(DeliverSm deliverSm) throws ProcessRequestException {
// This phase's scenarios never have the SMSC push a deliver_sm to jsmpp.
}
@Override
public void onAcceptAlertNotification(AlertNotification alertNotification) {
// Nothing to do: no scenario here sends one.
}
@Override
public org.jsmpp.session.DataSmResult onAcceptDataSm(DataSm dataSm, Session source)
throws ProcessRequestException {
throw new ProcessRequestException("data_sm not supported by this driver", 3);
}
}
}
@@ -0,0 +1,75 @@
package smpp.interop.jsmpp;
import java.util.List;
import java.util.Map;
/** A minimal JSON writer for the driver's own controlled output - no parsing needed. */
final class Json {
private Json() { }
static String write(Object value) {
StringBuilder sb = new StringBuilder();
writeValue(sb, value);
return sb.toString();
}
@SuppressWarnings("unchecked")
private static void writeValue(StringBuilder sb, Object value) {
if (value == null) {
sb.append("null");
} else if (value instanceof String s) {
writeString(sb, s);
} else if (value instanceof Boolean || value instanceof Integer || value instanceof Long) {
sb.append(value);
} else if (value instanceof Map<?, ?> map) {
sb.append('{');
boolean first = true;
for (Map.Entry<?, ?> entry : map.entrySet()) {
if (!first) sb.append(',');
first = false;
writeString(sb, String.valueOf(entry.getKey()));
sb.append(':');
writeValue(sb, entry.getValue());
}
sb.append('}');
} else if (value instanceof List<?> list) {
sb.append('[');
boolean first = true;
for (Object item : list) {
if (!first) sb.append(',');
first = false;
writeValue(sb, item);
}
sb.append(']');
} else if (value instanceof byte[] bytes) {
writeString(sb, hex(bytes));
} else {
writeString(sb, String.valueOf(value));
}
}
private static void writeString(StringBuilder sb, String s) {
sb.append('"');
for (int i = 0; i < s.length(); i++) {
char c = s.charAt(i);
switch (c) {
case '"' -> sb.append("\\\"");
case '\\' -> sb.append("\\\\");
case '\n' -> sb.append("\\n");
case '\r' -> sb.append("\\r");
case '\t' -> sb.append("\\t");
default -> {
if (c < 0x20) sb.append(String.format("\\u%04x", (int) c));
else sb.append(c);
}
}
}
sb.append('"');
}
static String hex(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 2);
for (byte b : bytes) sb.append(String.format("%02x", b));
return sb.toString();
}
}
@@ -0,0 +1,176 @@
package smpp.interop.jsmpp;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.Socket;
import java.nio.charset.StandardCharsets;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* A hand-rolled SMPP encoder over a plain socket, for the malformed PDUs jsmpp's own typed API
* cannot construct (target 1: unknown command id, a truncated TLV stream, a body shorter than it
* declares). Only what these scenarios need - a bind and the malformed shapes - not a real client.
*/
final class RawSmpp {
private RawSmpp() { }
private static void u8(ByteArrayOutputStream out, int v) {
out.write(v & 0xFF);
}
private static void u32(ByteArrayOutputStream out, long v) {
out.write((int) ((v >> 24) & 0xFF));
out.write((int) ((v >> 16) & 0xFF));
out.write((int) ((v >> 8) & 0xFF));
out.write((int) (v & 0xFF));
}
private static void cstring(ByteArrayOutputStream out, String s) {
if (s != null && !s.isEmpty()) out.writeBytes(s.getBytes(StandardCharsets.ISO_8859_1));
out.write(0);
}
private static byte[] pdu(int cmdId, int status, int seqNr, byte[] body) {
ByteArrayOutputStream out = new ByteArrayOutputStream();
u32(out, 16L + body.length);
u32(out, cmdId);
u32(out, status);
u32(out, seqNr);
out.writeBytes(body);
return out.toByteArray();
}
static byte[] bindTransceiverPdu(String systemId, String password, int interfaceVersion, int seqNr) {
ByteArrayOutputStream body = new ByteArrayOutputStream();
cstring(body, systemId);
cstring(body, password);
cstring(body, "");
u8(body, interfaceVersion);
u8(body, 0);
u8(body, 0);
cstring(body, "");
return pdu(0x00000009, 0, seqNr, body.toByteArray());
}
/** command_id 0x00050001 names no SMPP 3.4 command - an empty body is a well-framed PDU. */
static byte[] unknownCommandPdu(int seqNr) {
return pdu(0x00050001, 0, seqNr, new byte[0]);
}
/**
* A deliver_sm whose mandatory fields are all present and correct, followed by one TLV header
* whose declared length (200) runs past cmd_length - the codec's parseTlvs() refuses this with
* reason 'tlvs'.
*/
static byte[] truncatedTlvDeliverSmPdu(int seqNr) {
ByteArrayOutputStream body = deliverSmMandatory("raw-from", "raw-to", "truncated tlv probe");
// Tag 0x001D (any tag id serves), declared length 200, only 4 value octets actually follow.
// A full 8-byte tail (not a bare 4-byte header) so the codec's trailing-NUL retry - which
// shifts the TLV region by one octet looking for a padded short_message - still finds an
// overrunning length rather than silently swallowing an unparsed remainder as alignment slack.
body.write(0x00);
body.write(0x1D);
body.write(0x00);
body.write(0xC8);
body.write(0x41);
body.write(0x41);
body.write(0x41);
body.write(0x41);
return pdu(0x00000005, 0, seqNr, body.toByteArray());
}
/** A deliver_sm whose sm_length declares 200 octets while only 5 are actually present. */
static byte[] shortBodyDeliverSmPdu(int seqNr) {
ByteArrayOutputStream body = new ByteArrayOutputStream();
cstring(body, "");
u8(body, 0);
u8(body, 0);
cstring(body, "raw-from");
u8(body, 0);
u8(body, 0);
cstring(body, "raw-to");
u8(body, 0);
u8(body, 0);
u8(body, 0);
cstring(body, "");
cstring(body, "");
u8(body, 0);
u8(body, 0);
u8(body, 0);
u8(body, 0);
u8(body, 200); // sm_length declares 200 octets
body.writeBytes("short".getBytes(StandardCharsets.ISO_8859_1)); // only 5 actually follow
return pdu(0x00000005, 0, seqNr, body.toByteArray());
}
static byte[] enquireLinkPdu(int seqNr) {
return pdu(0x00000015, 0, seqNr, new byte[0]);
}
private static ByteArrayOutputStream deliverSmMandatory(String from, String to, String text) {
ByteArrayOutputStream body = new ByteArrayOutputStream();
cstring(body, "");
u8(body, 0);
u8(body, 0);
cstring(body, from);
u8(body, 0);
u8(body, 0);
cstring(body, to);
u8(body, 0);
u8(body, 0);
u8(body, 0);
cstring(body, "");
cstring(body, "");
u8(body, 0);
u8(body, 0);
u8(body, 0);
u8(body, 0);
byte[] textBytes = text.getBytes(StandardCharsets.ISO_8859_1);
u8(body, textBytes.length);
body.writeBytes(textBytes);
return body;
}
static void write(Socket sock, byte[] pdu) throws IOException {
OutputStream out = sock.getOutputStream();
out.write(pdu);
out.flush();
}
/** Reads exactly one PDU (command_length-framed) and parses its 16-octet header. */
static Map<String, Object> readOne(Socket sock, int timeoutMs) throws IOException {
sock.setSoTimeout(timeoutMs);
DataInputStream in = new DataInputStream(sock.getInputStream());
byte[] lenBytes = new byte[4];
in.readFully(lenBytes);
long cmdLength = ((long) (lenBytes[0] & 0xFF) << 24) | ((lenBytes[1] & 0xFF) << 16)
| ((lenBytes[2] & 0xFF) << 8) | (lenBytes[3] & 0xFF);
byte[] rest = new byte[(int) cmdLength - 4];
in.readFully(rest);
int cmdId = b32(rest, 0);
int status = b32(rest, 4);
int seqNr = b32(rest, 8);
Map<String, Object> result = new LinkedHashMap<>();
result.put("cmdId", cmdId);
result.put("cmdIdHex", "0x" + Integer.toHexString(cmdId));
result.put("cmdStatus", status);
result.put("cmdStatusHex", "0x" + Integer.toHexString(status));
result.put("seqNr", seqNr);
byte[] full = new byte[4 + rest.length];
System.arraycopy(lenBytes, 0, full, 0, 4);
System.arraycopy(rest, 0, full, 4, rest.length);
result.put("hex", Json.hex(full));
return result;
}
private static int b32(byte[] b, int offset) {
return ((b[offset] & 0xFF) << 24) | ((b[offset + 1] & 0xFF) << 16)
| ((b[offset + 2] & 0xFF) << 8) | (b[offset + 3] & 0xFF);
}
}
+2
View File
@@ -13,7 +13,9 @@ EXPERT_SEVERITY_ERROR = "8388608"
# The SMPP port each peer's compose overlay exposes its SMSC on.
PORT_BY_PEER = {
"cloudhopper": 2775,
"jasmin": 2775,
"jsmpp": 2775,
"kannel": 2775,
"smppsim": 2775,
"smscsim": 2775,