mirror of
https://github.com/lammertb/libhttp.git
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Generalized utility functions
This commit is contained in:
Lammert Bies
@@ -22,34 +22,102 @@
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* THE SOFTWARE.
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*/
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#ifndef CIVETWEB_HEADER_INCLUDED
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#define CIVETWEB_HEADER_INCLUDED
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#ifndef LIBHTTP_HEADER_INCLUDED
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#define LIBHTTP_HEADER_INCLUDED
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#define LIBHTTP_VERSION "1.9"
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#ifndef CIVETWEB_API
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#ifndef LIBHTTP_API
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#if defined(_WIN32)
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#if defined(CIVETWEB_DLL_EXPORTS)
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#define CIVETWEB_API __declspec(dllexport)
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#elif defined(CIVETWEB_DLL_IMPORTS)
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#define CIVETWEB_API __declspec(dllimport)
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#if defined(LIBHTTP_DLL_EXPORTS)
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#define LIBHTTP_API __declspec(dllexport)
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#elif defined(LIBHTTP_DLL_IMPORTS)
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#define LIBHTTP_API __declspec(dllimport)
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#else
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#define CIVETWEB_API
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#define LIBHTTP_API
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#endif
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#elif __GNUC__ >= 4
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#define CIVETWEB_API __attribute__((visibility("default")))
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#define LIBHTTP_API __attribute__((visibility("default")))
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#else
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#define CIVETWEB_API
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#define LIBHTTP_API
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#endif
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#endif
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#include <stdio.h>
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#include <stddef.h>
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/*
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* For our Posix emulation functions to open and close directories we need
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* to know the path length. If this length is not set yet, we set it here based
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* on an educated guess.
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*/
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#if !defined(PATH_MAX)
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#define PATH_MAX (MAX_PATH)
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#endif /* PATH_MAX */
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#if !defined(PATH_MAX)
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#define PATH_MAX (4096)
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#endif /* PATH_MAX */
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#if defined(_WIN32)
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/*
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* The OS does not support Posix calls, but we need some of them for the
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* library to function properly. We therefore define some items which makes
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* life easier in the multiple target world.
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*/
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#define SIGKILL (0)
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#else /* _WIN32 */
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/*
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* For Posix compliant systems we need to read some include files where
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* definitions, structures and prototypes are present.
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*/
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#include <sys/poll.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <signal.h>
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#endif /* _WIN32 */
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#if defined(_WIN32)
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/*
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* In Windows we emulate the Posix directory functions to make the OS dependent
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* code on the application side as small as possible.
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*/
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struct dirent {
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char d_name[PATH_MAX];
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};
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typedef struct DIR {
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HANDLE handle;
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WIN32_FIND_DATAW info;
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struct dirent result;
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} DIR;
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#endif
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#if defined(_WIN32) && !defined(POLLIN)
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/*
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* If we are on Windows without poll(), we emulate this Posix function.
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*/
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#ifndef HAVE_POLL
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struct pollfd {
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SOCKET fd;
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short events;
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short revents;
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};
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#define POLLIN (0x0300)
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#endif /* HAVE_POLL */
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#endif /* _WIN32 && ! POLLIN */
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struct httplib_context; /* Handle for the HTTP service itself */
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struct httplib_connection; /* Handle for the individual connection */
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@@ -220,7 +288,7 @@ struct httplib_callbacks {
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Return:
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web server context, or NULL on error. */
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CIVETWEB_API struct httplib_context *httplib_start(const struct httplib_callbacks *callbacks, void *user_data, const char **configuration_options);
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LIBHTTP_API struct httplib_context *httplib_start(const struct httplib_callbacks *callbacks, void *user_data, const char **configuration_options);
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/* Stop the web server.
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@@ -228,7 +296,7 @@ CIVETWEB_API struct httplib_context *httplib_start(const struct httplib_callback
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Must be called last, when an application wants to stop the web server and
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release all associated resources. This function blocks until all LibHTTP
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threads are stopped. Context pointer becomes invalid. */
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CIVETWEB_API void httplib_stop(struct httplib_context *);
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LIBHTTP_API void httplib_stop(struct httplib_context *);
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/* httplib_request_handler
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@@ -267,7 +335,7 @@ typedef int (*httplib_request_handler)(struct httplib_connection *conn, void *cb
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to
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register it (not only a pattern match).
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cbdata: the callback data to give to the handler when it is called. */
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CIVETWEB_API void httplib_set_request_handler(struct httplib_context *ctx, const char *uri, httplib_request_handler handler, void *cbdata);
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LIBHTTP_API void httplib_set_request_handler(struct httplib_context *ctx, const char *uri, httplib_request_handler handler, void *cbdata);
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/* Callback types for websocket handlers in C/C++.
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@@ -305,7 +373,7 @@ typedef void (*httplib_websocket_close_handler)(const struct httplib_connection
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Set or remove handler functions for websocket connections.
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This function works similar to httplib_set_request_handler - see there. */
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CIVETWEB_API void
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LIBHTTP_API void
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httplib_set_websocket_handler(struct httplib_context *ctx,
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const char *uri,
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httplib_websocket_connect_handler connect_handler,
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@@ -333,7 +401,7 @@ typedef int (*httplib_authorization_handler)(struct httplib_connection *conn, vo
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Sets or removes a URI mapping for an authorization handler.
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This function works similar to httplib_set_request_handler - see there. */
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CIVETWEB_API void httplib_set_auth_handler(struct httplib_context *ctx, const char *uri, httplib_authorization_handler handler, void *cbdata);
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LIBHTTP_API void httplib_set_auth_handler(struct httplib_context *ctx, const char *uri, httplib_authorization_handler handler, void *cbdata);
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/* Get the value of particular configuration parameter.
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@@ -342,25 +410,25 @@ CIVETWEB_API void httplib_set_auth_handler(struct httplib_context *ctx, const ch
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If given parameter name is not valid, NULL is returned. For valid
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names, return value is guaranteed to be non-NULL. If parameter is not
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set, zero-length string is returned. */
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CIVETWEB_API const char *httplib_get_option(const struct httplib_context *ctx, const char *name);
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LIBHTTP_API const char *httplib_get_option(const struct httplib_context *ctx, const char *name);
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/* Get context from connection. */
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CIVETWEB_API struct httplib_context *
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LIBHTTP_API struct httplib_context *
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httplib_get_context(const struct httplib_connection *conn);
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/* Get user data passed to httplib_start from context. */
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CIVETWEB_API void *httplib_get_user_data(const struct httplib_context *ctx);
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LIBHTTP_API void *httplib_get_user_data(const struct httplib_context *ctx);
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/* Set user data for the current connection. */
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CIVETWEB_API void httplib_set_user_connection_data(struct httplib_connection *conn,
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LIBHTTP_API void httplib_set_user_connection_data(struct httplib_connection *conn,
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void *data);
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/* Get user data set for the current connection. */
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CIVETWEB_API void *
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LIBHTTP_API void *
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httplib_get_user_connection_data(const struct httplib_connection *conn);
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@@ -385,7 +453,7 @@ enum {
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/* Return array of struct httplib_option, representing all valid configuration
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options of libhttp.c.
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The array is terminated by a NULL name option. */
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CIVETWEB_API const struct httplib_option *httplib_get_valid_options(void);
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LIBHTTP_API const struct httplib_option *httplib_get_valid_options(void);
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struct httplib_server_ports {
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@@ -405,7 +473,7 @@ struct httplib_server_ports {
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The caller is responsibility to allocate the required memory.
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This function returns the number of struct httplib_server_ports elements
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filled in, or <0 in case of an error. */
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CIVETWEB_API int httplib_get_server_ports(const struct httplib_context *ctx, int size, struct httplib_server_ports *ports);
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LIBHTTP_API int httplib_get_server_ports(const struct httplib_context *ctx, int size, struct httplib_server_ports *ports);
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/* Add, edit or delete the entry in the passwords file.
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@@ -420,11 +488,11 @@ CIVETWEB_API int httplib_get_server_ports(const struct httplib_context *ctx, int
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Return:
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1 on success, 0 on error. */
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CIVETWEB_API int httplib_modify_passwords_file(const char *passwords_file_name, const char *domain, const char *user, const char *password);
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LIBHTTP_API int httplib_modify_passwords_file(const char *passwords_file_name, const char *domain, const char *user, const char *password);
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/* Return information associated with the request. */
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CIVETWEB_API const struct httplib_request_info *httplib_get_request_info(const struct httplib_connection *);
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LIBHTTP_API const struct httplib_request_info *httplib_get_request_info(const struct httplib_connection *);
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/* Send data to the client.
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@@ -432,7 +500,7 @@ CIVETWEB_API const struct httplib_request_info *httplib_get_request_info(const s
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0 when the connection has been closed
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-1 on error
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>0 number of bytes written on success */
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CIVETWEB_API int httplib_write(struct httplib_connection *, const void *buf, size_t len);
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LIBHTTP_API int httplib_write(struct httplib_connection *, const void *buf, size_t len);
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/* Send data to a websocket client wrapped in a websocket frame. Uses
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@@ -447,7 +515,7 @@ CIVETWEB_API int httplib_write(struct httplib_connection *, const void *buf, siz
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0 when the connection has been closed
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-1 on error
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>0 number of bytes written on success */
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CIVETWEB_API int httplib_websocket_write(struct httplib_connection *conn, int opcode, const char *data, size_t data_len);
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LIBHTTP_API int httplib_websocket_write(struct httplib_connection *conn, int opcode, const char *data, size_t data_len);
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/* Send data to a websocket server wrapped in a masked websocket frame. Uses
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@@ -462,7 +530,7 @@ CIVETWEB_API int httplib_websocket_write(struct httplib_connection *conn, int op
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0 when the connection has been closed
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-1 on error
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>0 number of bytes written on success */
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CIVETWEB_API int httplib_websocket_client_write(struct httplib_connection *conn, int opcode, const char *data, size_t data_len);
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LIBHTTP_API int httplib_websocket_client_write(struct httplib_connection *conn, int opcode, const char *data, size_t data_len);
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/* Blocks until unique access is obtained to this connection. Intended for use
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@@ -470,14 +538,14 @@ CIVETWEB_API int httplib_websocket_client_write(struct httplib_connection *conn,
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Invoke this before httplib_write or httplib_printf when communicating with a
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websocket if your code has server-initiated communication as well as
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communication in direct response to a message. */
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CIVETWEB_API void httplib_lock_connection(struct httplib_connection *conn);
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CIVETWEB_API void httplib_unlock_connection(struct httplib_connection *conn);
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LIBHTTP_API void httplib_lock_connection(struct httplib_connection *conn);
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LIBHTTP_API void httplib_unlock_connection(struct httplib_connection *conn);
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/* Lock server context. This lock may be used to protect resources
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that are shared between different connection/worker threads. */
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CIVETWEB_API void httplib_lock_context(struct httplib_context *ctx);
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CIVETWEB_API void httplib_unlock_context(struct httplib_context *ctx);
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LIBHTTP_API void httplib_lock_context(struct httplib_context *ctx);
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LIBHTTP_API void httplib_unlock_context(struct httplib_context *ctx);
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/* Opcodes, from http://tools.ietf.org/html/rfc6455 */
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@@ -513,11 +581,11 @@ enum {
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/* Send data to the client using printf() semantics.
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Works exactly like httplib_write(), but allows to do message formatting. */
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CIVETWEB_API int httplib_printf(struct httplib_connection *, PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);
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LIBHTTP_API int httplib_printf(struct httplib_connection *, PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);
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/* Send contents of the entire file together with HTTP headers. */
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CIVETWEB_API void httplib_send_file(struct httplib_connection *conn, const char *path);
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LIBHTTP_API void httplib_send_file(struct httplib_connection *conn, const char *path);
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/* Send contents of the entire file together with HTTP headers.
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Parameters:
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@@ -526,7 +594,7 @@ CIVETWEB_API void httplib_send_file(struct httplib_connection *conn, const char
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mime_type: Content-Type for file. NULL will cause the type to be
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looked up by the file extension.
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*/
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CIVETWEB_API void httplib_send_mime_file(struct httplib_connection *conn, const char *path, const char *mime_type);
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LIBHTTP_API void httplib_send_mime_file(struct httplib_connection *conn, const char *path, const char *mime_type);
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/* Send contents of the entire file together with HTTP headers.
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Parameters:
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@@ -539,10 +607,10 @@ CIVETWEB_API void httplib_send_mime_file(struct httplib_connection *conn, const
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included twice.
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NULL does not append anything.
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*/
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CIVETWEB_API void httplib_send_mime_file2(struct httplib_connection *conn, const char *path, const char *mime_type, const char *additional_headers);
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LIBHTTP_API void httplib_send_mime_file2(struct httplib_connection *conn, const char *path, const char *mime_type, const char *additional_headers);
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/* Store body data into a file. */
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CIVETWEB_API long long httplib_store_body(struct httplib_connection *conn, const char *path);
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LIBHTTP_API long long httplib_store_body(struct httplib_connection *conn, const char *path);
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/* Read entire request body and store it in a file "path".
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Return:
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< 0 Error
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@@ -555,7 +623,7 @@ CIVETWEB_API long long httplib_store_body(struct httplib_connection *conn, const
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0 connection has been closed by peer. No more data could be read.
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< 0 read error. No more data could be read from the connection.
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> 0 number of bytes read into the buffer. */
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CIVETWEB_API int httplib_read(struct httplib_connection *, void *buf, size_t len);
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LIBHTTP_API int httplib_read(struct httplib_connection *, void *buf, size_t len);
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/* Get the value of particular HTTP header.
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@@ -563,7 +631,7 @@ CIVETWEB_API int httplib_read(struct httplib_connection *, void *buf, size_t len
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This is a helper function. It traverses request_info->http_headers array,
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and if the header is present in the array, returns its value. If it is
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not present, NULL is returned. */
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CIVETWEB_API const char *httplib_get_header(const struct httplib_connection *, const char *name);
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LIBHTTP_API const char *httplib_get_header(const struct httplib_connection *, const char *name);
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/* Get a value of particular form variable.
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@@ -585,7 +653,7 @@ CIVETWEB_API const char *httplib_get_header(const struct httplib_connection *, c
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Destination buffer is guaranteed to be '\0' - terminated if it is not
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NULL or zero length. */
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CIVETWEB_API int httplib_get_var(const char *data, size_t data_len, const char *var_name, char *dst, size_t dst_len);
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LIBHTTP_API int httplib_get_var(const char *data, size_t data_len, const char *var_name, char *dst, size_t dst_len);
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/* Get a value of particular form variable.
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@@ -611,7 +679,7 @@ CIVETWEB_API int httplib_get_var(const char *data, size_t data_len, const char *
|
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Destination buffer is guaranteed to be '\0' - terminated if it is not
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NULL or zero length. */
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CIVETWEB_API int httplib_get_var2(const char *data, size_t data_len, const char *var_name, char *dst, size_t dst_len, size_t occurrence);
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LIBHTTP_API int httplib_get_var2(const char *data, size_t data_len, const char *var_name, char *dst, size_t dst_len, size_t occurrence);
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/* Fetch value of certain cookie variable into the destination buffer.
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@@ -627,7 +695,7 @@ CIVETWEB_API int httplib_get_var2(const char *data, size_t data_len, const char
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parameter is not found).
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-2 (destination buffer is NULL, zero length or too small to hold the
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value). */
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CIVETWEB_API int httplib_get_cookie(const char *cookie, const char *var_name, char *buf, size_t buf_len);
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LIBHTTP_API int httplib_get_cookie(const char *cookie, const char *var_name, char *buf, size_t buf_len);
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/* Download data from the remote web server.
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@@ -645,7 +713,7 @@ CIVETWEB_API int httplib_get_cookie(const char *cookie, const char *var_name, ch
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conn = httplib_download("google.com", 80, 0, ebuf, sizeof(ebuf),
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"%s", "GET / HTTP/1.0\r\nHost: google.com\r\n\r\n");
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*/
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CIVETWEB_API struct httplib_connection *
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LIBHTTP_API struct httplib_connection *
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httplib_download(const char *host,
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int port,
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int use_ssl,
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@@ -656,7 +724,7 @@ httplib_download(const char *host,
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/* Close the connection opened by httplib_download(). */
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CIVETWEB_API void httplib_close_connection(struct httplib_connection *conn);
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LIBHTTP_API void httplib_close_connection(struct httplib_connection *conn);
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/* This structure contains callback functions for handling form fields.
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@@ -741,24 +809,24 @@ enum {
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* error. In this case a number < 0 is returned as well.
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* In any case, it is the duty of the caller to remove files once they are
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* no longer required. */
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CIVETWEB_API int httplib_handle_form_request(struct httplib_connection *conn, struct httplib_form_data_handler *fdh);
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LIBHTTP_API int httplib_handle_form_request(struct httplib_connection *conn, struct httplib_form_data_handler *fdh);
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||||
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/* Convenience function -- create detached thread.
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Return: 0 on success, non-0 on error. */
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typedef void *(*httplib_thread_func_t)(void *);
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||||
CIVETWEB_API int httplib_start_thread(httplib_thread_func_t f, void *p);
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LIBHTTP_API int httplib_start_thread(httplib_thread_func_t f, void *p);
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||||
|
||||
CIVETWEB_API const char * httplib_get_builtin_mime_type( const char *file_name );
|
||||
LIBHTTP_API const char * httplib_get_builtin_mime_type( const char *file_name );
|
||||
|
||||
|
||||
/* Get text representation of HTTP status code. */
|
||||
CIVETWEB_API const char *httplib_get_response_code_text(struct httplib_connection *conn, int response_code);
|
||||
LIBHTTP_API const char *httplib_get_response_code_text(struct httplib_connection *conn, int response_code);
|
||||
|
||||
|
||||
/* Return LibHTTP version. */
|
||||
CIVETWEB_API const char *httplib_version(void);
|
||||
LIBHTTP_API const char *httplib_version(void);
|
||||
|
||||
|
||||
/* URL-decode input buffer into destination buffer.
|
||||
@@ -767,13 +835,13 @@ CIVETWEB_API const char *httplib_version(void);
|
||||
uses '+' as character for space, see RFC 1866 section 8.2.1
|
||||
http://ftp.ics.uci.edu/pub/ietf/html/rfc1866.txt
|
||||
Return: length of the decoded data, or -1 if dst buffer is too small. */
|
||||
CIVETWEB_API int httplib_url_decode(const char *src, int src_len, char *dst, int dst_len, int is_form_url_encoded);
|
||||
LIBHTTP_API int httplib_url_decode(const char *src, int src_len, char *dst, int dst_len, int is_form_url_encoded);
|
||||
|
||||
|
||||
/* URL-encode input buffer into destination buffer.
|
||||
returns the length of the resulting buffer or -1
|
||||
is the buffer is too small. */
|
||||
CIVETWEB_API int httplib_url_encode(const char *src, char *dst, size_t dst_len);
|
||||
LIBHTTP_API int httplib_url_encode(const char *src, char *dst, size_t dst_len);
|
||||
|
||||
|
||||
/* MD5 hash given strings.
|
||||
@@ -782,7 +850,7 @@ CIVETWEB_API int httplib_url_encode(const char *src, char *dst, size_t dst_len);
|
||||
MD5 hash. Example:
|
||||
char buf[33];
|
||||
httplib_md5(buf, "aa", "bb", NULL); */
|
||||
CIVETWEB_API char *httplib_md5(char buf[33], ...);
|
||||
LIBHTTP_API char *httplib_md5(char buf[33], ...);
|
||||
|
||||
|
||||
/* Print error message to the opened error log stream.
|
||||
@@ -792,12 +860,12 @@ CIVETWEB_API char *httplib_md5(char buf[33], ...);
|
||||
...: variable argument list
|
||||
Example:
|
||||
httplib_cry(conn,"i like %s", "logging"); */
|
||||
CIVETWEB_API void httplib_cry(const struct httplib_connection *conn, PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);
|
||||
LIBHTTP_API void httplib_cry(const struct httplib_connection *conn, PRINTF_FORMAT_STRING(const char *fmt), ...) PRINTF_ARGS(2, 3);
|
||||
|
||||
|
||||
/* utility methods to compare two buffers, case insensitive. */
|
||||
CIVETWEB_API int httplib_strcasecmp(const char *s1, const char *s2);
|
||||
CIVETWEB_API int httplib_strncasecmp(const char *s1, const char *s2, size_t len);
|
||||
LIBHTTP_API int httplib_strcasecmp(const char *s1, const char *s2);
|
||||
LIBHTTP_API int httplib_strncasecmp(const char *s1, const char *s2, size_t len);
|
||||
|
||||
|
||||
/* Connect to a websocket as a client
|
||||
@@ -818,7 +886,7 @@ CIVETWEB_API int httplib_strncasecmp(const char *s1, const char *s2, size_t len)
|
||||
On success, valid httplib_connection object.
|
||||
On error, NULL. Se error_buffer for details.
|
||||
*/
|
||||
CIVETWEB_API struct httplib_connection *
|
||||
LIBHTTP_API struct httplib_connection *
|
||||
httplib_connect_websocket_client(const char *host,
|
||||
int port,
|
||||
int use_ssl,
|
||||
@@ -843,7 +911,7 @@ httplib_connect_websocket_client(const char *host,
|
||||
On success, valid httplib_connection object.
|
||||
On error, NULL. Se error_buffer for details.
|
||||
*/
|
||||
CIVETWEB_API struct httplib_connection *httplib_connect_client(const char *host, int port, int use_ssl, char *error_buffer, size_t error_buffer_size);
|
||||
LIBHTTP_API struct httplib_connection *httplib_connect_client(const char *host, int port, int use_ssl, char *error_buffer, size_t error_buffer_size);
|
||||
|
||||
|
||||
struct httplib_client_options {
|
||||
@@ -855,7 +923,7 @@ struct httplib_client_options {
|
||||
};
|
||||
|
||||
|
||||
CIVETWEB_API struct httplib_connection *
|
||||
LIBHTTP_API struct httplib_connection *
|
||||
httplib_connect_client_secure(const struct httplib_client_options *client_options, char *error_buffer, size_t error_buffer_size);
|
||||
|
||||
|
||||
@@ -873,7 +941,7 @@ enum { TIMEOUT_INFINITE = -1 };
|
||||
On success, >= 0
|
||||
On error/timeout, < 0
|
||||
*/
|
||||
CIVETWEB_API int httplib_get_response(struct httplib_connection *conn, char *ebuf, size_t ebuf_len, int timeout);
|
||||
LIBHTTP_API int httplib_get_response(struct httplib_connection *conn, char *ebuf, size_t ebuf_len, int timeout);
|
||||
|
||||
|
||||
/* Check which features where set when LibHTTP has been compiled.
|
||||
@@ -891,11 +959,17 @@ CIVETWEB_API int httplib_get_response(struct httplib_connection *conn, char *ebu
|
||||
If feature is available > 0
|
||||
If feature is not available = 0
|
||||
*/
|
||||
CIVETWEB_API unsigned httplib_check_feature(unsigned feature);
|
||||
LIBHTTP_API unsigned httplib_check_feature(unsigned feature);
|
||||
|
||||
LIBHTTP_API int httplib_closedir( DIR *dir );
|
||||
LIBHTTP_API int httplib_kill( pid_t pid, int sig_num );
|
||||
LIBHTTP_API int httplib_mkdir( const char *path, int mode );
|
||||
LIBHTTP_API DIR * httplib_opendir( const char *name );
|
||||
LIBHTTP_API int httplib_poll( struct pollfd *pfd, unsigned int n, int milliseconds );
|
||||
LIBHTTP_API struct dirent * httplib_readdir( DIR *dir );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif /* __cplusplus */
|
||||
|
||||
#endif /* CIVETWEB_HEADER_INCLUDED */
|
||||
#endif /* LIBHTTP_HEADER_INCLUDED */
|
||||
|
||||
Reference in New Issue
Block a user