Leave alert_notification and outbind unanswered

src/incoming-requests.ts

@@ -16,6 +16,7 @@ import { createSms } from './sms.ts';
 import { dlrFromPdu } from './dlr.ts';
 import { paramText } from './defs/types.ts';
 import { respIdParams, segmentId } from './sms-id.ts';
+import { respNameFor } from './defs/commands.ts';
 
 /** SMPP 3.4 lists ESME_RMSGQFUL under submit_sm_resp only; 4.6.2's retryable code is another. */
 export function refusedSegmentStatus(
@@ -171,6 +172,12 @@ export class IncomingRequests {
 			return;
 		}
 
+		if (!respNameFor(pduObj.cmdName)) {
+			this.log.info('session - ignoring a command SMPP gives no response', { cmdName: pduObj.cmdName });
+
+			return;
+		}
+
 		this.log.info('session - no handler for command', { cmdName: pduObj.cmdName });
 		await this.session.sendReturn(pduObj, 'ESME_RINVCMDID');
 	}

src/server.ts

@@ -13,6 +13,7 @@ import { defaultInterfaceVersion } from './defs/constants.ts';
 import { errorFrom } from './error-from.ts';
 import { paramText } from './defs/types.ts';
 import { guardedLog } from './log.ts';
+import { respNameFor } from './defs/commands.ts';
 
 export type AuthenticateResult = { userData?: unknown } | boolean;
 
@@ -224,7 +225,7 @@ async function handleRequest(
 		return true;
 	}
 
-	if (pduObj.cmdName === 'unbind') return false;
+	if (pduObj.cmdName === 'unbind' || !respNameFor(pduObj.cmdName)) return false;
 
 	session.log.debug('server - command before bind', { cmdName: pduObj.cmdName });
 	await session.sendReturn(pduObj, 'ESME_RINVBNDSTS');