| c | SPDX-License-Identifier | Title | Section | Source | See-also | Protocol | ||
|---|---|---|---|---|---|---|---|---|
Copyright (C) Dorian Craps, <dorian.craps@student.vinci.be>, et al. |
curl |
CURLOPT_MPTCP |
3 |
libcurl |
|
|
CURLOPT_MPTCP - enable Multipath TCP
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MPTCP, long enable);Pass a long as parameter set to 1L to enable or 0 to disable.
MPTCP is an extension to the standard TCP that allows multiple TCP streams over different network paths between the same source and destination. This can enhance bandwidth and improve reliability by using multiple paths simultaneously. MPTCP is beneficial in networks where multiple paths exist between clients and servers, such as mobile networks where a device may switch between WiFi and cellular data or in wired networks with multiple Internet Service Providers.
Enabling MPTCP can improve the performance and reliability of network requests, particularly in environments where multiple network paths (e.g., WiFi and cellular) are available.
Note: MPTCP support depends on the underlying operating system and network infrastructure. Some networks might drop unknown MPTCP, and its effectiveness varies based on the network configuration and conditions. If MPTCP is not supported by the network or the end server, the connection seamlessly falls back to TCP.
0
int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl, CURLOPT_MPTCP, 1L);
curl_easy_perform(curl);
}
}Support for MPTCP in libcurl requires Linux 5.6 or later. The features availability in libcurl can also depend on the version of libcurl. Added in 8.8.0.
Returns CURLE_OK if MPTCP is successfully enabled for the connection, otherwise returns an error code specific to the reason it could not be enabled, which might include lack of operating system support or libcurl not being built with MPTCP support.