include/event2/http.h

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/*
 * Copyright (c) 2000-2007 Niels Provos <provos@citi.umich.edu>
 * Copyright (c) 2007-2009 Niels Provos and Nick Mathewson
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#ifndef _EVENT2_HTTP_H_
#define _EVENT2_HTTP_H_

/* For int types. */
#include <event2/util.h>

#ifdef __cplusplus
extern "C" {
#endif

#ifdef WIN32
#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <windows.h>
#undef WIN32_LEAN_AND_MEAN
#endif

/* In case we haven't included the right headers yet. */
struct evbuffer;
struct event_base;

/* Response codes */
#define HTTP_OK                 200     
#define HTTP_NOCONTENT          204     
#define HTTP_MOVEPERM           301     
#define HTTP_MOVETEMP           302     
#define HTTP_NOTMODIFIED        304     
#define HTTP_BADREQUEST         400     
#define HTTP_NOTFOUND           404     
#define HTTP_SERVUNAVAIL        503     
struct evhttp;
struct evhttp_request;
struct evkeyvalq;

struct evhttp *evhttp_new(struct event_base *base);

int evhttp_bind_socket(struct evhttp *http, const char *address, ev_uint16_t port);

int evhttp_accept_socket(struct evhttp *http, evutil_socket_t fd);

void evhttp_free(struct evhttp* http);

int evhttp_set_cb(struct evhttp *http, const char *path,
    void (*cb)(struct evhttp_request *, void *), void *cb_arg);

int evhttp_del_cb(struct evhttp *, const char *);

void evhttp_set_gencb(struct evhttp *http,
    void (*cb)(struct evhttp_request *, void *), void *arg);

int evhttp_add_virtual_host(struct evhttp* http, const char *pattern,
    struct evhttp* vhost);

int evhttp_remove_virtual_host(struct evhttp* http, struct evhttp* vhost);

void evhttp_set_timeout(struct evhttp *http, int timeout_in_secs);

/* Request/Response functionality */

void evhttp_send_error(struct evhttp_request *req, int error,
    const char *reason);

void evhttp_send_reply(struct evhttp_request *req, int code,
    const char *reason, struct evbuffer *databuf);

/* Low-level response interface, for streaming/chunked replies */

void evhttp_send_reply_start(struct evhttp_request *req, int code,
    const char *reason);

void evhttp_send_reply_chunk(struct evhttp_request *req,
    struct evbuffer *databuf);
void evhttp_send_reply_end(struct evhttp_request *req);

/*
 * Interfaces for making requests
 */

enum evhttp_cmd_type {
        EVHTTP_REQ_GET,
        EVHTTP_REQ_POST,
        EVHTTP_REQ_HEAD,
        EVHTTP_REQ_PUT,
        EVHTTP_REQ_DELETE
};

enum evhttp_request_kind { EVHTTP_REQUEST, EVHTTP_RESPONSE };

struct evhttp_request *evhttp_request_new(
        void (*cb)(struct evhttp_request *, void *), void *arg);

void evhttp_request_set_chunked_cb(struct evhttp_request *,
    void (*cb)(struct evhttp_request *, void *));

void evhttp_request_free(struct evhttp_request *req);

struct evhttp_connection *evhttp_connection_base_new(
        struct event_base *base, const char *address, unsigned short port);

void evhttp_request_own(struct evhttp_request *req);

int evhttp_request_is_owned(struct evhttp_request *req);

void evhttp_connection_free(struct evhttp_connection *evcon);

void evhttp_connection_set_local_address(struct evhttp_connection *evcon,
    const char *address);

void evhttp_connection_set_local_port(struct evhttp_connection *evcon,
    ev_uint16_t port);

void evhttp_connection_set_timeout(struct evhttp_connection *evcon,
    int timeout_in_secs);

void evhttp_connection_set_retries(struct evhttp_connection *evcon,
    int retry_max);

void evhttp_connection_set_closecb(struct evhttp_connection *evcon,
    void (*)(struct evhttp_connection *, void *), void *);

void evhttp_connection_get_peer(struct evhttp_connection *evcon,
    char **address, ev_uint16_t *port);

int evhttp_make_request(struct evhttp_connection *evcon,
    struct evhttp_request *req,
    enum evhttp_cmd_type type, const char *uri);

void evhttp_cancel_request(struct evhttp_request *req);


const char *evhttp_request_get_uri(struct evhttp_request *req);
struct evkeyvalq *evhttp_request_get_input_headers(struct evhttp_request *req);
struct evkeyvalq *evhttp_request_get_output_headers(struct evhttp_request *req);
struct evbuffer *evhttp_request_get_input_buffer(struct evhttp_request *req);
struct evbuffer *evhttp_request_get_output_buffer(struct evhttp_request *req);

/* Interfaces for dealing with HTTP headers */

const char *evhttp_find_header(const struct evkeyvalq *headers,
    const char *key);

int evhttp_remove_header(struct evkeyvalq *headers, const char *key);

int evhttp_add_header(struct evkeyvalq *headers, const char *key, const char *value);

void evhttp_clear_headers(struct evkeyvalq *headers);

/* Miscellaneous utility functions */


char *evhttp_encode_uri(const char *uri);


char *evhttp_decode_uri(const char *uri);


void evhttp_parse_query(const char *uri, struct evkeyvalq *headers);


char *evhttp_htmlescape(const char *html);

#ifdef __cplusplus
}
#endif

#endif /* _EVENT2_HTTP_H_ */

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