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Diffstat (limited to 'lib/asyn.h')
| -rw-r--r-- | lib/asyn.h | 168 |
1 files changed, 0 insertions, 168 deletions
diff --git a/lib/asyn.h b/lib/asyn.h deleted file mode 100644 index 1b681ea12..000000000 --- a/lib/asyn.h +++ /dev/null @@ -1,168 +0,0 @@ -#ifndef HEADER_CURL_ASYN_H -#define HEADER_CURL_ASYN_H -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. - * - * This software is licensed as described in the file COPYING, which - * you should have received as part of this distribution. The terms - * are also available at http://curl.haxx.se/docs/copyright.html. - * - * You may opt to use, copy, modify, merge, publish, distribute and/or sell - * copies of the Software, and permit persons to whom the Software is - * furnished to do so, under the terms of the COPYING file. - * - * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY - * KIND, either express or implied. - * - ***************************************************************************/ - -#include "curl_setup.h" -#include "curl_addrinfo.h" - -struct addrinfo; -struct hostent; -struct SessionHandle; -struct connectdata; -struct Curl_dns_entry; - -/* - * This header defines all functions in the internal asynch resolver interface. - * All asynch resolvers need to provide these functions. - * asyn-ares.c and asyn-thread.c are the current implementations of asynch - * resolver backends. - */ - -/* - * Curl_resolver_global_init() - * - * Called from curl_global_init() to initialize global resolver environment. - * Returning anything else than CURLE_OK fails curl_global_init(). - */ -int Curl_resolver_global_init(void); - -/* - * Curl_resolver_global_cleanup() - * Called from curl_global_cleanup() to destroy global resolver environment. - */ -void Curl_resolver_global_cleanup(void); - -/* - * Curl_resolver_init() - * Called from curl_easy_init() -> Curl_open() to initialize resolver - * URL-state specific environment ('resolver' member of the UrlState - * structure). Should fill the passed pointer by the initialized handler. - * Returning anything else than CURLE_OK fails curl_easy_init() with the - * correspondent code. - */ -CURLcode Curl_resolver_init(void **resolver); - -/* - * Curl_resolver_cleanup() - * Called from curl_easy_cleanup() -> Curl_close() to cleanup resolver - * URL-state specific environment ('resolver' member of the UrlState - * structure). Should destroy the handler and free all resources connected to - * it. - */ -void Curl_resolver_cleanup(void *resolver); - -/* - * Curl_resolver_duphandle() - * Called from curl_easy_duphandle() to duplicate resolver URL-state specific - * environment ('resolver' member of the UrlState structure). Should - * duplicate the 'from' handle and pass the resulting handle to the 'to' - * pointer. Returning anything else than CURLE_OK causes failed - * curl_easy_duphandle() call. - */ -int Curl_resolver_duphandle(void **to, void *from); - -/* - * Curl_resolver_cancel(). - * - * It is called from inside other functions to cancel currently performing - * resolver request. Should also free any temporary resources allocated to - * perform a request. - */ -void Curl_resolver_cancel(struct connectdata *conn); - -/* Curl_resolver_getsock() - * - * This function is called from the multi_getsock() function. 'sock' is a - * pointer to an array to hold the file descriptors, with 'numsock' being the - * size of that array (in number of entries). This function is supposed to - * return bitmask indicating what file descriptors (referring to array indexes - * in the 'sock' array) to wait for, read/write. - */ -int Curl_resolver_getsock(struct connectdata *conn, curl_socket_t *sock, - int numsocks); - -/* - * Curl_resolver_is_resolved() - * - * Called repeatedly to check if a previous name resolve request has - * completed. It should also make sure to time-out if the operation seems to - * take too long. - * - * Returns normal CURLcode errors. - */ -CURLcode Curl_resolver_is_resolved(struct connectdata *conn, - struct Curl_dns_entry **dns); - -/* - * Curl_resolver_wait_resolv() - * - * waits for a resolve to finish. This function should be avoided since using - * this risk getting the multi interface to "hang". - * - * If 'entry' is non-NULL, make it point to the resolved dns entry - * - * Returns CURLE_COULDNT_RESOLVE_HOST if the host was not resolved, and - * CURLE_OPERATION_TIMEDOUT if a time-out occurred. - - */ -CURLcode Curl_resolver_wait_resolv(struct connectdata *conn, - struct Curl_dns_entry **dnsentry); - -/* - * Curl_resolver_getaddrinfo() - when using this resolver - * - * Returns name information about the given hostname and port number. If - * successful, the 'hostent' is returned and the forth argument will point to - * memory we need to free after use. That memory *MUST* be freed with - * Curl_freeaddrinfo(), nothing else. - * - * Each resolver backend must of course make sure to return data in the - * correct format to comply with this. - */ -Curl_addrinfo *Curl_resolver_getaddrinfo(struct connectdata *conn, - const char *hostname, - int port, - int *waitp); - -#ifndef CURLRES_ASYNCH -/* convert these functions if an asynch resolver isn't used */ -#define Curl_resolver_cancel(x) Curl_nop_stmt -#define Curl_resolver_is_resolved(x,y) CURLE_COULDNT_RESOLVE_HOST -#define Curl_resolver_wait_resolv(x,y) CURLE_COULDNT_RESOLVE_HOST -#define Curl_resolver_getsock(x,y,z) 0 -#define Curl_resolver_duphandle(x,y) CURLE_OK -#define Curl_resolver_init(x) CURLE_OK -#define Curl_resolver_global_init() CURLE_OK -#define Curl_resolver_global_cleanup() Curl_nop_stmt -#define Curl_resolver_cleanup(x) Curl_nop_stmt -#endif - -#ifdef CURLRES_ASYNCH -#define Curl_resolver_asynch() 1 -#else -#define Curl_resolver_asynch() 0 -#endif - - -/********** end of generic resolver interface functions *****************/ -#endif /* HEADER_CURL_ASYN_H */ |