CURLOPT_PROXYHEADER.md (2035B)
1 --- 2 c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al. 3 SPDX-License-Identifier: curl 4 Title: CURLOPT_PROXYHEADER 5 Section: 3 6 Source: libcurl 7 See-also: 8 - CURLOPT_HEADEROPT (3) 9 - CURLOPT_HTTPHEADER (3) 10 Protocol: 11 - All 12 Added-in: 7.37.0 13 --- 14 15 # NAME 16 17 CURLOPT_PROXYHEADER - set of HTTP headers to pass to proxy 18 19 # SYNOPSIS 20 21 ~~~c 22 #include <curl/curl.h> 23 24 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PROXYHEADER, 25 struct curl_slist *headers); 26 ~~~ 27 28 # DESCRIPTION 29 30 Pass a pointer to a linked list of HTTP headers to pass in your HTTP request 31 sent to a proxy. The rules for this list is identical to the 32 CURLOPT_HTTPHEADER(3) option's. 33 34 The headers set with this option is only ever used in requests sent to a proxy 35 - when there is also a request sent to a host. 36 37 The first line in a request (containing the method, usually a GET or POST) is 38 NOT a header and cannot be replaced using this option. Only the lines 39 following the request-line are headers. Adding this method line in this list 40 of headers causes your request to send an invalid header. 41 42 Using this option multiple times makes the last set list override the previous 43 ones. Set it to NULL to disable its use again. 44 45 libcurl does not copy the list, it needs to be kept around until after the 46 transfer has completed. 47 48 # DEFAULT 49 50 NULL 51 52 # %PROTOCOLS% 53 54 # EXAMPLE 55 56 ~~~c 57 int main(void) 58 { 59 CURL *curl = curl_easy_init(); 60 61 struct curl_slist *list; 62 63 if(curl) { 64 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); 65 curl_easy_setopt(curl, CURLOPT_PROXY, "http://proxy.example.com:80"); 66 67 list = curl_slist_append(NULL, "Shoesize: 10"); 68 list = curl_slist_append(list, "Accept:"); 69 70 curl_easy_setopt(curl, CURLOPT_PROXYHEADER, list); 71 72 curl_easy_perform(curl); 73 74 curl_slist_free_all(list); /* free the list again */ 75 } 76 } 77 ~~~ 78 79 # %AVAILABILITY% 80 81 # RETURN VALUE 82 83 curl_easy_setopt(3) returns a CURLcode indicating success or error. 84 85 CURLE_OK (0) means everything was OK, non-zero means an error occurred, see 86 libcurl-errors(3).