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eefcc1bda4
curldown is this new file format for libcurl man pages. It is markdown inspired with differences: - Each file has a set of leading headers with meta-data - Supports a small subset of markdown - Uses .md file extensions for editors/IDE/GitHub to treat them nicely - Generates man pages very similar to the previous ones - Generates man pages that still convert nicely to HTML on the website - Detects and highlights mentions of curl symbols automatically (when their man page section is specified) tools: - cd2nroff: converts from curldown to nroff man page - nroff2cd: convert an (old) nroff man page to curldown - cdall: convert many nroff pages to curldown versions - cd2cd: verifies and updates a curldown to latest curldown This setup generates .3 versions of all the curldown versions at build time. CI: Since the documentation is now technically markdown in the eyes of many things, the CI runs many more tests and checks on this documentation, including proselint, link checkers and tests that make sure we capitalize the first letter after a period... Closes #12730
65 lines
1.2 KiB
Markdown
65 lines
1.2 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_LOCALPORT
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Section: 3
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Source: libcurl
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See-also:
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- CURLINFO_LOCAL_PORT (3)
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- CURLOPT_INTERFACE (3)
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- CURLOPT_LOCALPORTRANGE (3)
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---
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# NAME
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CURLOPT_LOCALPORT - local port number to use for socket
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_LOCALPORT, long port);
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~~~
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# DESCRIPTION
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Pass a long. This sets the local port number of the socket used for the
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connection. This can be used in combination with CURLOPT_INTERFACE(3)
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and you are recommended to use CURLOPT_LOCALPORTRANGE(3) as well when
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this option is set. Valid port numbers are 1 - 65535.
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# DEFAULT
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0, disabled - use whatever the system thinks is fine
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# PROTOCOLS
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All
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# EXAMPLE
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~~~c
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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CURLcode res;
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curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
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curl_easy_setopt(curl, CURLOPT_LOCALPORT, 49152L);
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/* and try 20 more ports following that */
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curl_easy_setopt(curl, CURLOPT_LOCALPORTRANGE, 20L);
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res = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# AVAILABILITY
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Added in 7.15.2
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# RETURN VALUE
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Returns CURLE_OK
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