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| 1 /* | |
| 2 * Copyright 2001 Niels Provos <provos@citi.umich.edu> | |
| 3 * All rights reserved. | |
| 4 * | |
| 5 * This header file contains definitions for dealing with HTTP requests | |
| 6 * that are internal to libevent. As user of the library, you should not | |
| 7 * need to know about these. | |
| 8 */ | |
| 9 | |
| 10 #ifndef _HTTP_H_ | |
| 11 #define _HTTP_H_ | |
| 12 | |
| 13 #define HTTP_CONNECT_TIMEOUT 45 | |
| 14 #define HTTP_WRITE_TIMEOUT 50 | |
| 15 #define HTTP_READ_TIMEOUT 50 | |
| 16 | |
| 17 #define HTTP_PREFIX "http://" | |
| 18 #define HTTP_DEFAULTPORT 80 | |
| 19 | |
| 20 enum message_read_status { | |
| 21 ALL_DATA_READ = 1, | |
| 22 MORE_DATA_EXPECTED = 0, | |
| 23 DATA_CORRUPTED = -1, | |
| 24 REQUEST_CANCELED = -2 | |
| 25 }; | |
| 26 | |
| 27 enum evhttp_connection_error { | |
| 28 EVCON_HTTP_TIMEOUT, | |
| 29 EVCON_HTTP_EOF, | |
| 30 EVCON_HTTP_INVALID_HEADER | |
| 31 }; | |
| 32 | |
| 33 struct evbuffer; | |
| 34 struct addrinfo; | |
| 35 struct evhttp_request; | |
| 36 | |
| 37 /* A stupid connection object - maybe make this a bufferevent later */ | |
| 38 | |
| 39 enum evhttp_connection_state { | |
| 40 EVCON_DISCONNECTED, /**< not currently connected not trying either*/ | |
| 41 EVCON_CONNECTING, /**< tries to currently connect */ | |
| 42 EVCON_IDLE, /**< connection is established */ | |
| 43 EVCON_READING_FIRSTLINE,/**< reading Request-Line (incoming conn) or | |
| 44 **< Status-Line (outgoing conn) */ | |
| 45 EVCON_READING_HEADERS, /**< reading request/response headers */ | |
| 46 EVCON_READING_BODY, /**< reading request/response body */ | |
| 47 EVCON_READING_TRAILER, /**< reading request/response chunked trailer */ | |
| 48 EVCON_WRITING /**< writing request/response headers/body */ | |
| 49 }; | |
| 50 | |
| 51 struct event_base; | |
| 52 | |
| 53 struct evhttp_connection { | |
| 54 /* we use tailq only if they were created for an http server */ | |
| 55 TAILQ_ENTRY(evhttp_connection) (next); | |
| 56 | |
| 57 int fd; | |
| 58 struct event ev; | |
| 59 struct event close_ev; | |
| 60 struct evbuffer *input_buffer; | |
| 61 struct evbuffer *output_buffer; | |
| 62 | |
| 63 char *bind_address; /* address to use for binding the src */ | |
| 64 u_short bind_port; /* local port for binding the src */ | |
| 65 | |
| 66 char *address; /* address to connect to */ | |
| 67 u_short port; | |
| 68 | |
| 69 int flags; | |
| 70 #define EVHTTP_CON_INCOMING 0x0001 /* only one request on it ever */ | |
| 71 #define EVHTTP_CON_OUTGOING 0x0002 /* multiple requests possible */ | |
| 72 #define EVHTTP_CON_CLOSEDETECT 0x0004 /* detecting if persistent close */ | |
| 73 | |
| 74 int timeout; /* timeout in seconds for events */ | |
| 75 int retry_cnt; /* retry count */ | |
| 76 int retry_max; /* maximum number of retries */ | |
| 77 | |
| 78 enum evhttp_connection_state state; | |
| 79 | |
| 80 /* for server connections, the http server they are connected with */ | |
| 81 struct evhttp *http_server; | |
| 82 | |
| 83 TAILQ_HEAD(evcon_requestq, evhttp_request) requests; | |
| 84 | |
| 85 void (*cb)(struct evhttp_conn
ection *, void *); | |
| 86 void *cb_arg; | |
| 87 | |
| 88 void (*closecb)(struct evhttp_connection *, void *); | |
| 89 void *closecb_arg; | |
| 90 | |
| 91 struct event_base *base; | |
| 92 }; | |
| 93 | |
| 94 struct evhttp_cb { | |
| 95 TAILQ_ENTRY(evhttp_cb) next; | |
| 96 | |
| 97 char *what; | |
| 98 | |
| 99 void (*cb)(struct evhttp_request *req, void *); | |
| 100 void *cbarg; | |
| 101 }; | |
| 102 | |
| 103 /* both the http server as well as the rpc system need to queue connections */ | |
| 104 TAILQ_HEAD(evconq, evhttp_connection); | |
| 105 | |
| 106 /* each bound socket is stored in one of these */ | |
| 107 struct evhttp_bound_socket { | |
| 108 TAILQ_ENTRY(evhttp_bound_socket) (next); | |
| 109 | |
| 110 struct event bind_ev; | |
| 111 }; | |
| 112 | |
| 113 struct evhttp { | |
| 114 TAILQ_HEAD(boundq, evhttp_bound_socket) sockets; | |
| 115 | |
| 116 TAILQ_HEAD(httpcbq, evhttp_cb) callbacks; | |
| 117 struct evconq connections; | |
| 118 | |
| 119 int timeout; | |
| 120 | |
| 121 void (*gencb)(struct evhttp_request *req, void *); | |
| 122 void *gencbarg; | |
| 123 | |
| 124 struct event_base *base; | |
| 125 }; | |
| 126 | |
| 127 /* resets the connection; can be reused for more requests */ | |
| 128 void evhttp_connection_reset(struct evhttp_connection *); | |
| 129 | |
| 130 /* connects if necessary */ | |
| 131 int evhttp_connection_connect(struct evhttp_connection *); | |
| 132 | |
| 133 /* notifies the current request that it failed; resets connection */ | |
| 134 void evhttp_connection_fail(struct evhttp_connection *, | |
| 135 enum evhttp_connection_error error); | |
| 136 | |
| 137 void evhttp_get_request(struct evhttp *, int, struct sockaddr *, socklen_t); | |
| 138 | |
| 139 int evhttp_hostportfile(char *, char **, u_short *, char **); | |
| 140 | |
| 141 int evhttp_parse_firstline(struct evhttp_request *, struct evbuffer*); | |
| 142 int evhttp_parse_headers(struct evhttp_request *, struct evbuffer*); | |
| 143 | |
| 144 void evhttp_start_read(struct evhttp_connection *); | |
| 145 void evhttp_make_header(struct evhttp_connection *, struct evhttp_request *); | |
| 146 | |
| 147 void evhttp_write_buffer(struct evhttp_connection *, | |
| 148 void (*)(struct evhttp_connection *, void *), void *); | |
| 149 | |
| 150 /* response sending HTML the data in the buffer */ | |
| 151 void evhttp_response_code(struct evhttp_request *, int, const char *); | |
| 152 void evhttp_send_page(struct evhttp_request *, struct evbuffer *); | |
| 153 | |
| 154 #endif /* _HTTP_H */ | |
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Chromium Code Reviews
Issue 1531573008:
move libevent into base (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master