uhttpd: Add TCP_FASTOPEN support

Provides a small speedup when resuming the connection.

Signed-off by: Rosen Penev <rosenp@gmail.com>

diff --git a/listen.c b/listen.c
index 92ca680..2a54888 100644 (file)
--- a/listen.c
+++ b/listen.c
@@ -107,15 +107,17 @@ void uh_setup_listeners(void)
                /* TCP keep-alive */
                if (conf.tcp_keepalive > 0) {
 #ifdef linux
-                       int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt;
+                       int tcp_ka_idl, tcp_ka_int, tcp_ka_cnt, tcp_fstopn;
 
                        tcp_ka_idl = 1;
                        tcp_ka_cnt = 3;
                        tcp_ka_int = conf.tcp_keepalive;
+                       tcp_fstopn = 5;
 
                        setsockopt(sock, SOL_TCP, TCP_KEEPIDLE,  &tcp_ka_idl, sizeof(tcp_ka_idl));
                        setsockopt(sock, SOL_TCP, TCP_KEEPINTVL, &tcp_ka_int, sizeof(tcp_ka_int));
                        setsockopt(sock, SOL_TCP, TCP_KEEPCNT,   &tcp_ka_cnt, sizeof(tcp_ka_cnt));
+                       setsockopt(sock, SOL_TCP, TCP_FASTOPEN,  &tcp_fstopn, sizeof(tcp_fstopn));
 #endif
 
                        setsockopt(sock, SOL_SOCKET, SO_KEEPALIVE, &yes, sizeof(yes));