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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 example, 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  absence	of  such.  By  including  this	string in your list of
       aliases,	the response 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
       assumed to match	HTTP 1.0 when an alias match.

       Using  this  option multiple times makes	the last set list override the
       previous	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;
	   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);
	   curl_easy_perform(curl);
	   curl_slist_free_all(list); /* free the list again */
	 }
       }

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				  2025-06-03	     CURLOPT_HTTP200ALIASES(3)

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