From b4546efd318bfde9374e5af409942cc1e7eb93be Mon Sep 17 00:00:00 2001
From: Orgad Shaneh <orgad.shaneh@audiocodes.com>
Date: Sun, 15 Sep 2024 14:49:52 +0300
Subject: [PATCH] SRTP: Use global random ssrc instead of hardcoded value

---
 src/jlsrtp.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/jlsrtp.cpp b/src/jlsrtp.cpp
index 7091e21f..44014aa5 100644
--- a/src/jlsrtp.cpp
+++ b/src/jlsrtp.cpp
@@ -29,6 +29,8 @@
 #include <iterator>
 #include <sstream> // std::ostringstream
 
+extern unsigned int global_ssrc_id;
+
 // --------------- PRIVATE METHODS ----------------
 
 bool JLSRTP::isBase64(unsigned char c)
@@ -3518,7 +3520,10 @@ bool JLSRTP::operator!=(const JLSRTP& that)
 
 JLSRTP::JLSRTP()
 {
-    resetCryptoContext(0xCA110000, "127.0.0.1", 0);
+    if (global_ssrc_id == 0) {
+        global_ssrc_id = rand();
+    }
+    resetCryptoContext(global_ssrc_id, "127.0.0.1", 0);
 
     _pseudorandomstate.cipher = EVP_CIPHER_CTX_new();
     if (_pseudorandomstate.cipher != nullptr)