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Diffstat (limited to 'curl/multi.h')
| -rw-r--r-- | curl/multi.h | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/curl/multi.h b/curl/multi.h deleted file mode 100644 index f965666..0000000 --- a/curl/multi.h +++ /dev/null @@ -1,345 +0,0 @@ -#ifndef __CURL_MULTI_H -#define __CURL_MULTI_H -/*************************************************************************** - * _ _ ____ _ - * Project ___| | | | _ \| | - * / __| | | | |_) | | - * | (__| |_| | _ <| |___ - * \___|\___/|_| \_\_____| - * - * Copyright (C) 1998 - 2007, 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. - * - ***************************************************************************/ -/* - This is an "external" header file. Don't give away any internals here! - - GOALS - - o Enable a "pull" interface. The application that uses libcurl decides where - and when to ask libcurl to get/send data. - - o Enable multiple simultaneous transfers in the same thread without making it - complicated for the application. - - o Enable the application to select() on its own file descriptors and curl's - file descriptors simultaneous easily. - -*/ - -/* - * This header file should not really need to include "curl.h" since curl.h - * itself includes this file and we expect user applications to do #include - * <curl/curl.h> without the need for especially including multi.h. - * - * For some reason we added this include here at one point, and rather than to - * break existing (wrongly written) libcurl applications, we leave it as-is - * but with this warning attached. - */ -#include "curl.h" - -#ifdef __cplusplus -extern "C" { -#endif - -typedef void CURLM; - -typedef enum { - CURLM_CALL_MULTI_PERFORM = -1, /* please call curl_multi_perform() or - curl_multi_socket*() soon */ - CURLM_OK, - CURLM_BAD_HANDLE, /* the passed-in handle is not a valid CURLM handle */ - CURLM_BAD_EASY_HANDLE, /* an easy handle was not good/valid */ - CURLM_OUT_OF_MEMORY, /* if you ever get this, you're in deep sh*t */ - CURLM_INTERNAL_ERROR, /* this is a libcurl bug */ - CURLM_BAD_SOCKET, /* the passed in socket argument did not match */ - CURLM_UNKNOWN_OPTION, /* curl_multi_setopt() with unsupported option */ - CURLM_LAST -} CURLMcode; - -/* just to make code nicer when using curl_multi_socket() you can now check - for CURLM_CALL_MULTI_SOCKET too in the same style it works for - curl_multi_perform() and CURLM_CALL_MULTI_PERFORM */ -#define CURLM_CALL_MULTI_SOCKET CURLM_CALL_MULTI_PERFORM - -typedef enum { - CURLMSG_NONE, /* first, not used */ - CURLMSG_DONE, /* This easy handle has completed. 'result' contains - the CURLcode of the transfer */ - CURLMSG_LAST /* last, not used */ -} CURLMSG; - -struct CURLMsg { - CURLMSG msg; /* what this message means */ - CURL *easy_handle; /* the handle it concerns */ - union { - void *whatever; /* message-specific data */ - CURLcode result; /* return code for transfer */ - } data; -}; -typedef struct CURLMsg CURLMsg; - -/* - * Name: curl_multi_init() - * - * Desc: inititalize multi-style curl usage - * - * Returns: a new CURLM handle to use in all 'curl_multi' functions. - */ -CURL_EXTERN CURLM *curl_multi_init(void); - -/* - * Name: curl_multi_add_handle() - * - * Desc: add a standard curl handle to the multi stack - * - * Returns: CURLMcode type, general multi error code. - */ -CURL_EXTERN CURLMcode curl_multi_add_handle(CURLM *multi_handle, - CURL *curl_handle); - - /* - * Name: curl_multi_remove_handle() - * - * Desc: removes a curl handle from the multi stack again - * - * Returns: CURLMcode type, general multi error code. - */ -CURL_EXTERN CURLMcode curl_multi_remove_handle(CURLM *multi_handle, - CURL *curl_handle); - - /* - * Name: curl_multi_fdset() - * - * Desc: Ask curl for its fd_set sets. The app can use these to select() or - * poll() on. We want curl_multi_perform() called as soon as one of - * them are ready. - * - * Returns: CURLMcode type, general multi error code. - */ -CURL_EXTERN CURLMcode curl_multi_fdset(CURLM *multi_handle, - fd_set *read_fd_set, - fd_set *write_fd_set, - fd_set *exc_fd_set, - int *max_fd); - - /* - * Name: curl_multi_perform() - * - * Desc: When the app thinks there's data available for curl it calls this - * function to read/write whatever there is right now. This returns - * as soon as the reads and writes are done. This function does not - * require that there actually is data available for reading or that - * data can be written, it can be called just in case. It returns - * the number of handles that still transfer data in the second - * argument's integer-pointer. - * - * Returns: CURLMcode type, general multi error code. *NOTE* that this only - * returns errors etc regarding the whole multi stack. There might - * still have occurred problems on invidual transfers even when this - * returns OK. - */ -CURL_EXTERN CURLMcode curl_multi_perform(CURLM *multi_handle, - int *running_handles); - - /* - * Name: curl_multi_cleanup() - * - * Desc: Cleans up and removes a whole multi stack. It does not free or - * touch any individual easy handles in any way. We need to define - * in what state those handles will be if this function is called - * in the middle of a transfer. - * - * Returns: CURLMcode type, general multi error code. - */ -CURL_EXTERN CURLMcode curl_multi_cleanup(CURLM *multi_handle); - -/* - * Name: curl_multi_info_read() - * - * Desc: Ask the multi handle if there's any messages/informationals from - * the individual transfers. Messages include informationals such as - * error code from the transfer or just the fact that a transfer is - * completed. More details on these should be written down as well. - * - * Repeated calls to this function will return a new struct each - * time, until a special "end of msgs" struct is returned as a signal - * that there is no more to get at this point. - * - * The data the returned pointer points to will not survive calling - * curl_multi_cleanup(). - * - * The 'CURLMsg' struct is meant to be very simple and only contain - * very basic informations. If more involved information is wanted, - * we will provide the particular "transfer handle" in that struct - * and that should/could/would be used in subsequent - * curl_easy_getinfo() calls (or similar). The point being that we - * must never expose complex structs to applications, as then we'll - * undoubtably get backwards compatibility problems in the future. - * - * Returns: A pointer to a filled-in struct, or NULL if it failed or ran out - * of structs. It also writes the number of messages left in the - * queue (after this read) in the integer the second argument points - * to. - */ -CURL_EXTERN CURLMsg *curl_multi_info_read(CURLM *multi_handle, - int *msgs_in_queue); - -/* - * Name: curl_multi_strerror() - * - * Desc: The curl_multi_strerror function may be used to turn a CURLMcode - * value into the equivalent human readable error string. This is - * useful for printing meaningful error messages. - * - * Returns: A pointer to a zero-terminated error message. - */ -CURL_EXTERN const char *curl_multi_strerror(CURLMcode); - -/* - * Name: curl_multi_socket() and - * curl_multi_socket_all() - * - * Desc: An alternative version of curl_multi_perform() that allows the - * application to pass in one of the file descriptors that have been - * detected to have "action" on them and let libcurl perform. - * See man page for details. - */ -#define CURL_POLL_NONE 0 -#define CURL_POLL_IN 1 -#define CURL_POLL_OUT 2 -#define CURL_POLL_INOUT 3 -#define CURL_POLL_REMOVE 4 - -#define CURL_SOCKET_TIMEOUT CURL_SOCKET_BAD - -#define CURL_CSELECT_IN 0x01 -#define CURL_CSELECT_OUT 0x02 -#define CURL_CSELECT_ERR 0x04 - -typedef int (*curl_socket_callback)(CURL *easy, /* easy handle */ - curl_socket_t s, /* socket */ - int what, /* see above */ - void *userp, /* private callback - pointer */ - void *socketp); /* private socket - pointer */ -/* - * Name: curl_multi_timer_callback - * - * Desc: Called by libcurl whenever the library detects a change in the - * maximum number of milliseconds the app is allowed to wait before - * curl_multi_socket() or curl_multi_perform() must be called - * (to allow libcurl's timed events to take place). - * - * Returns: The callback should return zero. - */ -typedef int (*curl_multi_timer_callback)(CURLM *multi, /* multi handle */ - long timeout_ms, /* see above */ - void *userp); /* private callback - pointer */ - -CURL_EXTERN CURLMcode curl_multi_socket(CURLM *multi_handle, curl_socket_t s, - int *running_handles); - -CURL_EXTERN CURLMcode curl_multi_socket_action(CURLM *multi_handle, - curl_socket_t s, - int ev_bitmask, - int *running_handles); - -CURL_EXTERN CURLMcode curl_multi_socket_all(CURLM *multi_handle, - int *running_handles); - -#ifndef CURL_ALLOW_OLD_MULTI_SOCKET -/* This macro below was added in 7.16.3 to push users who recompile to use - the new curl_multi_socket_action() instead of the old curl_multi_socket() -*/ -#define curl_multi_socket(x,y,z) curl_multi_socket_action(x,y,0,z) -#endif - -/* - * Name: curl_multi_timeout() - * - * Desc: Returns the maximum number of milliseconds the app is allowed to - * wait before curl_multi_socket() or curl_multi_perform() must be - * called (to allow libcurl's timed events to take place). - * - * Returns: CURLM error code. - */ -CURL_EXTERN CURLMcode curl_multi_timeout(CURLM *multi_handle, - long *milliseconds); - -#undef CINIT /* re-using the same name as in curl.h */ - -#ifdef CURL_ISOCPP -#define CINIT(name,type,num) CURLMOPT_ ## name = CURLOPTTYPE_ ## type + num -#else -/* The macro "##" is ISO C, we assume pre-ISO C doesn't support it. */ -#define LONG CURLOPTTYPE_LONG -#define OBJECTPOINT CURLOPTTYPE_OBJECTPOINT -#define FUNCTIONPOINT CURLOPTTYPE_FUNCTIONPOINT -#define OFF_T CURLOPTTYPE_OFF_T -#define CINIT(name,type,number) CURLMOPT_/**/name = type + number -#endif - -typedef enum { - /* This is the socket callback function pointer */ - CINIT(SOCKETFUNCTION, FUNCTIONPOINT, 1), - - /* This is the argument passed to the socket callback */ - CINIT(SOCKETDATA, OBJECTPOINT, 2), - - /* set to 1 to enable pipelining for this multi handle */ - CINIT(PIPELINING, LONG, 3), - - /* This is the timer callback function pointer */ - CINIT(TIMERFUNCTION, FUNCTIONPOINT, 4), - - /* This is the argument passed to the timer callback */ - CINIT(TIMERDATA, OBJECTPOINT, 5), - - /* maximum number of entries in the connection cache */ - CINIT(MAXCONNECTS, LONG, 6), - - CURLMOPT_LASTENTRY /* the last unused */ -} CURLMoption; - - -/* - * Name: curl_multi_setopt() - * - * Desc: Sets options for the multi handle. - * - * Returns: CURLM error code. - */ -CURL_EXTERN CURLMcode curl_multi_setopt(CURLM *multi_handle, - CURLMoption option, ...); - - -/* - * Name: curl_multi_assign() - * - * Desc: This function sets an association in the multi handle between the - * given socket and a private pointer of the application. This is - * (only) useful for curl_multi_socket uses. - * - * Returns: CURLM error code. - */ -CURL_EXTERN CURLMcode curl_multi_assign(CURLM *multi_handle, - curl_socket_t sockfd, void *sockp); - -#ifdef __cplusplus -} /* end of extern "C" */ -#endif - -#endif |