From 7617a52ecee3c32373c16d8a8647cafb41286942 Mon Sep 17 00:00:00 2001
From: Jason-JP-Yang <jiepengyang@outlook.com>
Date: Wed, 29 Oct 2025 14:16:28 +0800
Subject: [PATCH] Increase the file descriptor limit at startup to support high
 concurrency configurations

---
 trunk/etc/init.d/srs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/trunk/etc/init.d/srs b/trunk/etc/init.d/srs
index 371b450cb..d8ba918c8 100755
--- a/trunk/etc/init.d/srs
+++ b/trunk/etc/init.d/srs
@@ -17,6 +17,7 @@ APP="./objs/srs"
 CONFIG="./conf/srs.conf"
 DEFAULT_PID_FILE='./objs/srs.pid'
 DEFAULT_LOG_FILE='./objs/srs.log'
+NOFILE_LIMIT="${NOFILE_LIMIT:-10000}"
 
 ########################################################################
 # utility functions
@@ -74,7 +75,14 @@ start() {
     log_dir=`dirname $log_file`
     log_file=`(cd ${ROOT} && cd $log_dir && pwd)`/`basename $log_file`
     
-    # TODO: FIXME: set limit by, for instance, "ulimit -HSn 10000"
+    # Raise file descriptor limits so high-concurrency configs do not fail on startup.
+    local limit_failed=0
+    ulimit -Hn ${NOFILE_LIMIT} 2>/dev/null || limit_failed=1
+    ulimit -Sn ${NOFILE_LIMIT} 2>/dev/null || limit_failed=1
+    if [[ ${limit_failed} -eq 1 ]]; then
+        echo -e "${YELLOW}Warning: unable to set nofile limit to ${NOFILE_LIMIT}. Current soft limit: $(ulimit -Sn).${BLACK}"
+    fi
+
     if [[ -z $log_file ]]; then
         (ulimit -c unlimited && cd ${ROOT}; ${APP} -c ${CONFIG} >/dev/null 2>&1)
     else