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CURLOPT_HTTP200ALIASES(3) Library Functions Manual CURLOPT_HTTP200ALIASES(3) NAME CURLOPT_HTTP200ALIASES - alternative matches for HTTP 200 OK SYNOPSIS #include <curl/curl.h> CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HTTP200ALIASES, struct curl_slist *aliases); DESCRIPTION Pass a pointer to a linked list of aliases to be treated as valid HTTP 200 responses. Some servers respond with a custom header response line. For ex- ample, SHOUTcast servers respond with "ICY 200 OK". Also some old Icecast 1.3.x servers respond like that for certain user agent headers or in ab- sence of such. By including this string in your list of aliases, the re- sponse gets treated as a valid HTTP header line such as "HTTP/1.0 200 OK". The linked list should be a fully valid list of struct curl_slist structs, and be properly filled in. Use curl_slist_append(3) to create the list and curl_slist_free_all(3) to clean up an entire list. The alias itself is not parsed for any version strings. The protocol is as- sumed to match HTTP 1.0 when an alias match. Using this option multiple times makes the last set list override the pre- vious ones. Set it to NULL to disable its use again. libcurl does not copy the list, it needs to be kept around until after the transfer has completed. DEFAULT NULL PROTOCOLS This functionality affects http only EXAMPLE int main(void) { CURL *curl = curl_easy_init(); if(curl) { struct curl_slist *list; CURLcode result; curl_easy_setopt(curl, CURLOPT_URL, "https://example.com"); list = curl_slist_append(NULL, "ICY 200 OK"); list = curl_slist_append(list, "WEIRDO 99 FINE"); curl_easy_setopt(curl, CURLOPT_HTTP200ALIASES, list); result = curl_easy_perform(curl); curl_slist_free_all(list); /* free the list again */ curl_easy_cleanup(curl); } } AVAILABILITY Added in curl 7.10.3 RETURN VALUE curl_easy_setopt(3) returns a CURLcode indicating success or error. CURLE_OK (0) means everything was OK, non-zero means an error occurred, see libcurl-errors(3). SEE ALSO CURLOPT_HTTP09_ALLOWED(3), CURLOPT_HTTP_VERSION(3) libcurl 2026-06-11 CURLOPT_HTTP200ALIASES(3)
NAME | SYNOPSIS | DESCRIPTION | DEFAULT | PROTOCOLS | EXAMPLE | AVAILABILITY | RETURN VALUE | SEE ALSO
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