quickjs-tart

quickjs-based runtime for wallet-core logic
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CURLOPT_TCP_FASTOPEN.md (1390B)

      1 ---
      2 c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
      3 SPDX-License-Identifier: curl
      4 Title: CURLOPT_TCP_FASTOPEN
      5 Section: 3
      6 Source: libcurl
      7 See-also:
      8   - CURLOPT_SSL_FALSESTART (3)
      9 Protocol:
     10   - TCP
     11 Added-in: 7.49.0
     12 ---
     13 
     14 # NAME
     15 
     16 CURLOPT_TCP_FASTOPEN - TCP Fast Open
     17 
     18 # SYNOPSIS
     19 
     20 ~~~c
     21 #include <curl/curl.h>
     22 
     23 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_TCP_FASTOPEN, long enable);
     24 ~~~
     25 
     26 # DESCRIPTION
     27 
     28 Pass a long as parameter set to 1L to enable or 0 to disable.
     29 
     30 TCP Fast Open (RFC 7413) is a mechanism that allows data to be carried in the
     31 SYN and SYN-ACK packets and consumed by the receiving end during the initial
     32 connection handshake, saving up to one full round-trip time (RTT).
     33 
     34 Beware: the TLS session cache does not work when TCP Fast Open is enabled. TCP
     35 Fast Open is also known to be problematic on or across certain networks.
     36 
     37 # DEFAULT
     38 
     39 0
     40 
     41 # %PROTOCOLS%
     42 
     43 # EXAMPLE
     44 
     45 ~~~c
     46 int main(void)
     47 {
     48   CURL *curl = curl_easy_init();
     49   if(curl) {
     50     curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
     51     curl_easy_setopt(curl, CURLOPT_TCP_FASTOPEN, 1L);
     52     curl_easy_perform(curl);
     53   }
     54 }
     55 ~~~
     56 
     57 # NOTES
     58 
     59 This option is only supported on Linux and macOS 10.11 or later.
     60 
     61 # %AVAILABILITY%
     62 
     63 # RETURN VALUE
     64 
     65 curl_easy_setopt(3) returns a CURLcode indicating success or error.
     66 
     67 CURLE_OK (0) means everything was OK, non-zero means an error occurred, see
     68 libcurl-errors(3).