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+---
+c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_TCP_NODELAY
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_BUFFERSIZE (3)
+  - CURLOPT_SOCKOPTFUNCTION (3)
+  - CURLOPT_TCP_KEEPALIVE (3)
+---
+
+# NAME
+
+CURLOPT_TCP_NODELAY - the TCP_NODELAY option
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_NODELAY, long nodelay);
+~~~
+
+# DESCRIPTION
+
+Pass a long specifying whether the *TCP_NODELAY* option is to be set or
+cleared (1L = set, 0 = clear). The option is set by default. This has no
+effect after the connection has been established.
+
+Setting this option to 1L disables TCP's Nagle algorithm on connections
+created using this handle. The purpose of this algorithm is to try to minimize
+the number of small packets on the network (where "small packets" means TCP
+segments less than the Maximum Segment Size for the network).
+
+Maximizing the amount of data sent per TCP segment is good because it
+amortizes the overhead of the send. However, in some cases small segments may
+need to be sent without delay. This is less efficient than sending larger
+amounts of data at a time, and can contribute to congestion on the network if
+overdone.
+
+# DEFAULT
+
+1
+
+# PROTOCOLS
+
+All
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    /* leave Nagle enabled */
+    curl_easy_setopt(curl, CURLOPT_TCP_NODELAY, 0);
+    curl_easy_perform(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Always. The default was changed to 1 from 0 in 7.50.2.
+
+# RETURN VALUE
+
+Returns CURLE_OK