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CURLOPT_TCP_NODELAY(3)

CURLOPT_TCP_NODELAY(3)     curl_easy_setopt options     CURLOPT_TCP_NODELAY(3)



NAME
       CURLOPT_TCP_NODELAY - the TCP_NODELAY option

SYNOPSIS
       #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  will
       have no effect after the connection has been established.

       Setting  this  option  to 1L will disable TCP's Nagle algorithm on this
       connection. 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 seg‐
       ments may need to be sent without delay. This is  less  efficient  than
       sending larger amounts of data at a time, and can contribute to conges‐
       tion on the network if overdone.

DEFAULT
       1

PROTOCOLS
       All

EXAMPLE
       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

SEE ALSO
       CURLOPT_SOCKOPTFUNCTION(3), CURLOPT_TCP_KEEPALIVE(3),



libcurl 7.86.0                September 20, 2022        CURLOPT_TCP_NODELAY(3)
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