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- /*
- * Copyright 2001 Niels Provos <provos@citi.umich.edu>
- * All rights reserved.
- *
- * This header file contains definitions for dealing with HTTP requests
- * that are internal to libevent. As user of the library, you should not
- * need to know about these.
- */
- #ifndef _HTTP_H_
- #define _HTTP_H_
- #define HTTP_CONNECT_TIMEOUT 45
- #define HTTP_WRITE_TIMEOUT 50
- #define HTTP_READ_TIMEOUT 50
- #define HTTP_PREFIX "http://"
- #define HTTP_DEFAULTPORT 80
- enum message_read_status {
- ALL_DATA_READ = 1,
- MORE_DATA_EXPECTED = 0,
- DATA_CORRUPTED = -1,
- REQUEST_CANCELED = -2
- };
- enum evhttp_connection_error {
- EVCON_HTTP_TIMEOUT,
- EVCON_HTTP_EOF,
- EVCON_HTTP_INVALID_HEADER
- };
- struct evbuffer;
- struct evhttp_request;
- /* A stupid connection object - maybe make this a bufferevent later */
- enum evhttp_connection_state {
- EVCON_DISCONNECTED, /**< not currently connected not trying either*/
- EVCON_CONNECTING, /**< tries to currently connect */
- EVCON_IDLE, /**< connection is established */
- EVCON_READING_FIRSTLINE,/**< reading Request-Line (incoming conn) or
- **< Status-Line (outgoing conn) */
- EVCON_READING_HEADERS, /**< reading request/response headers */
- EVCON_READING_BODY, /**< reading request/response body */
- EVCON_READING_TRAILER, /**< reading request/response chunked trailer */
- EVCON_WRITING /**< writing request/response headers/body */
- };
- struct event_base;
- struct evhttp_connection {
- /* we use tailq only if they were created for an http server */
- TAILQ_ENTRY(evhttp_connection) (next);
- int fd;
- struct event ev;
- struct event close_ev;
- struct evbuffer *input_buffer;
- struct evbuffer *output_buffer;
-
- char *bind_address; /* address to use for binding the src */
- u_short bind_port; /* local port for binding the src */
- char *address; /* address to connect to */
- u_short port;
- int flags;
- #define EVHTTP_CON_INCOMING 0x0001 /* only one request on it ever */
- #define EVHTTP_CON_OUTGOING 0x0002 /* multiple requests possible */
- #define EVHTTP_CON_CLOSEDETECT 0x0004 /* detecting if persistent close */
- int timeout; /* timeout in seconds for events */
- int retry_cnt; /* retry count */
- int retry_max; /* maximum number of retries */
-
- enum evhttp_connection_state state;
- /* for server connections, the http server they are connected with */
- struct evhttp *http_server;
- TAILQ_HEAD(evcon_requestq, evhttp_request) requests;
-
- void (*cb)(struct evhttp_connection *, void *);
- void *cb_arg;
-
- void (*closecb)(struct evhttp_connection *, void *);
- void *closecb_arg;
- struct event_base *base;
- };
- struct evhttp_cb {
- TAILQ_ENTRY(evhttp_cb) next;
- char *what;
- void (*cb)(struct evhttp_request *req, void *);
- void *cbarg;
- };
- /* both the http server as well as the rpc system need to queue connections */
- TAILQ_HEAD(evconq, evhttp_connection);
- /* each bound socket is stored in one of these */
- struct evhttp_bound_socket {
- TAILQ_ENTRY(evhttp_bound_socket) (next);
- struct event bind_ev;
- };
- struct evhttp {
- TAILQ_HEAD(boundq, evhttp_bound_socket) sockets;
- TAILQ_HEAD(httpcbq, evhttp_cb) callbacks;
- struct evconq connections;
- int timeout;
- void (*gencb)(struct evhttp_request *req, void *);
- void *gencbarg;
- struct event_base *base;
- };
- /* resets the connection; can be reused for more requests */
- void evhttp_connection_reset(struct evhttp_connection *);
- /* connects if necessary */
- int evhttp_connection_connect(struct evhttp_connection *);
- /* notifies the current request that it failed; resets connection */
- void evhttp_connection_fail(struct evhttp_connection *,
- enum evhttp_connection_error error);
- void evhttp_get_request(struct evhttp *, int, struct sockaddr *, socklen_t);
- int evhttp_hostportfile(char *, char **, u_short *, char **);
- int evhttp_parse_firstline(struct evhttp_request *, struct evbuffer*);
- int evhttp_parse_headers(struct evhttp_request *, struct evbuffer*);
- void evhttp_start_read(struct evhttp_connection *);
- void evhttp_make_header(struct evhttp_connection *, struct evhttp_request *);
- void evhttp_write_buffer(struct evhttp_connection *,
- void (*)(struct evhttp_connection *, void *), void *);
- /* response sending HTML the data in the buffer */
- void evhttp_response_code(struct evhttp_request *, int, const char *);
- void evhttp_send_page(struct evhttp_request *, struct evbuffer *);
- #endif /* _HTTP_H */
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