Update outgoing message size calculation

indutny-signal · web-flow · commit cb22552cadeb · 2025-09-30T03:55:14.000+10:00
diff --git a/ts/textsecure/OutgoingMessage.ts b/ts/textsecure/OutgoingMessage.ts
@@ -88,15 +88,19 @@ function ciphertextMessageTypeToEnvelopeType(type: number) {
   );
 }
 
+const PADDING_BLOCK = 80;
+
 function getPaddedMessageLength(messageLength: number): number {
   const messageLengthWithTerminator = messageLength + 1;
-  let messagePartCount = Math.floor(messageLengthWithTerminator / 160);
+  let messagePartCount = Math.floor(
+    messageLengthWithTerminator / PADDING_BLOCK
+  );
 
-  if (messageLengthWithTerminator % 160 !== 0) {
+  if (messageLengthWithTerminator % PADDING_BLOCK !== 0) {
     messagePartCount += 1;
   }
 
-  return messagePartCount * 160;
+  return messagePartCount * PADDING_BLOCK;
 }
 
 export function padMessage(messageBuffer: Uint8Array): Uint8Array {

Original file line number	Diff line number	Diff line change
`@@ -88,15 +88,19 @@ function ciphertextMessageTypeToEnvelopeType(type: number) {`
`88`	`88`	`);`
`89`	`89`	`}`
`90`	`90`
	`91`	`+const PADDING_BLOCK = 80;`
	`92`	`+`
`91`	`93`	`function getPaddedMessageLength(messageLength: number): number {`
`92`	`94`	`const messageLengthWithTerminator = messageLength + 1;`
`93`		`- let messagePartCount = Math.floor(messageLengthWithTerminator / 160);`
	`95`	`+ let messagePartCount = Math.floor(`
	`96`	`+ messageLengthWithTerminator / PADDING_BLOCK`
	`97`	`+ );`
`94`	`98`
`95`		`- if (messageLengthWithTerminator % 160 !== 0) {`
	`99`	`+ if (messageLengthWithTerminator % PADDING_BLOCK !== 0) {`
`96`	`100`	`messagePartCount += 1;`
`97`	`101`	`}`
`98`	`102`
`99`		`- return messagePartCount * 160;`
	`103`	`+ return messagePartCount * PADDING_BLOCK;`
`100`	`104`	`}`
`101`	`105`
`102`	`106`	`export function padMessage(messageBuffer: Uint8Array): Uint8Array {`