From a41a9bfbed0b1d6a00a9f209f7ee156f39532837 Mon Sep 17 00:00:00 2001
From: Viktor Szakats <commit@vsz.me>
Date: Sun, 3 Aug 2025 23:48:53 +0200
Subject: [PATCH] build: disable `TCP_NODELAY` for emscripten

---
 lib/cf-socket.c      | 2 +-
 tests/server/rtspd.c | 2 +-
 tests/server/sws.c   | 8 ++++----
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/lib/cf-socket.c b/lib/cf-socket.c
index 06c9a74368..a7c0ef0840 100644
--- a/lib/cf-socket.c
+++ b/lib/cf-socket.c
@@ -109,7 +109,7 @@ static void set_ipv6_v6only(curl_socket_t sockfd, int on)
 
 static void tcpnodelay(struct Curl_easy *data, curl_socket_t sockfd)
 {
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
   curl_socklen_t onoff = (curl_socklen_t) 1;
   int level = IPPROTO_TCP;
   char buffer[STRERROR_LEN];
diff --git a/tests/server/rtspd.c b/tests/server/rtspd.c
index d046fdf420..67829922dc 100644
--- a/tests/server/rtspd.c
+++ b/tests/server/rtspd.c
@@ -1224,7 +1224,7 @@ static int test_rtspd(int argc, char *argv[])
 
     logmsg("====> Client connect");
 
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
     /*
      * Disable the Nagle algorithm to make it easier to send out a large
      * response in many small segments to torture the clients more.
diff --git a/tests/server/sws.c b/tests/server/sws.c
index 2ae4727ad6..f03b9bdcdb 100644
--- a/tests/server/sws.c
+++ b/tests/server/sws.c
@@ -158,7 +158,7 @@ static const char *doc404 = "HTTP/1.1 404 Not Found\r\n"
 /* work around for handling trailing headers */
 static int already_recv_zeroed_chunk = FALSE;
 
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
 /* returns true if the current socket is an IP one */
 static bool socket_domain_is_ip(void)
 {
@@ -1239,7 +1239,7 @@ static curl_socket_t connect_to(const char *ipaddr, unsigned short port)
     return CURL_SOCKET_BAD;
   }
 
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
   if(socket_domain_is_ip()) {
     /* Disable the Nagle algorithm */
     curl_socklen_t flag = 1;
@@ -1545,7 +1545,7 @@ static void http_connect(curl_socket_t *infdp,
           }
           memset(req2, 0, sizeof(*req2));
           logmsg("====> Client connect DATA");
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
           if(socket_domain_is_ip()) {
             /* Disable the Nagle algorithm */
             curl_socklen_t flag = 1;
@@ -1871,7 +1871,7 @@ static curl_socket_t accept_connection(curl_socket_t sock)
   all_sockets[num_sockets] = msgsock;
   num_sockets += 1;
 
-#ifdef TCP_NODELAY
+#if defined(TCP_NODELAY) && !defined(__EMSCRIPTEN__)
   if(socket_domain_is_ip()) {
     /*
      * Disable the Nagle algorithm to make it easier to send out a large