From: Sven Kube <mail@sven-kube.de>
Date: Tue, 13 May 2025 13:37:38 +0000 (+0200)
Subject: res_audiosocket.c: Set the TCP_NODELAY socket option
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c0e8f4f63b2ec2f3bb94e4dec8c9c43da332360d;p=thirdparty%2Fasterisk.git

res_audiosocket.c: Set the TCP_NODELAY socket option

Disable Nagle's algorithm by setting the TCP_NODELAY socket option.
This reduces latency by preventing delays caused by packet buffering.
---

diff --git a/res/res_audiosocket.c b/res/res_audiosocket.c
index 3c4682df7f..3df074ceaa 100644
--- a/res/res_audiosocket.c
+++ b/res/res_audiosocket.c
@@ -140,6 +140,14 @@ const int ast_audiosocket_connect(const char *server, struct ast_channel *chan)
 			continue;
 		}
 
+		/*
+		 * Disable Nagle's algorithm by setting the TCP_NODELAY socket option.
+		 * This reduces latency by preventing delays caused by packet buffering.
+		 */
+		if (setsockopt(s, IPPROTO_TCP, TCP_NODELAY, &(int){1}, sizeof(int)) < 0) {
+			ast_log(LOG_ERROR, "Failed to set TCP_NODELAY on AudioSocket: %s\n", strerror(errno));
+		}
+
 		if (ast_connect(s, &addrs[i]) && errno == EINPROGRESS) {
 
 			if (handle_audiosocket_connection(server, addrs[i], s)) {