Squashed 'third_party/libevent/' content from commit d8ceae8
Change-Id: I84e1b23561eb225b9f288717b028e6bc9e5a27e1
git-subtree-dir: third_party/libevent
git-subtree-split: d8ceae81b83f3d0a56e2f41d4c429b2702a8e302
diff --git a/http-internal.h b/http-internal.h
new file mode 100644
index 0000000..5f66673
--- /dev/null
+++ b/http-internal.h
@@ -0,0 +1,195 @@
+/*
+ * Copyright 2001-2007 Niels Provos <provos@citi.umich.edu>
+ * Copyright 2007-2012 Niels Provos and Nick Mathewson
+ *
+ * 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_INTERNAL_H_
+#define _HTTP_INTERNAL_H_
+
+#include "event2/event_struct.h"
+#include "util-internal.h"
+#include "defer-internal.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,
+ DATA_TOO_LONG = -3
+};
+
+enum evhttp_connection_error {
+ EVCON_HTTP_TIMEOUT,
+ EVCON_HTTP_EOF,
+ EVCON_HTTP_INVALID_HEADER,
+ EVCON_HTTP_BUFFER_ERROR,
+ EVCON_HTTP_REQUEST_CANCEL
+};
+
+struct evbuffer;
+struct addrinfo;
+struct evhttp_request;
+
+/* Indicates an unknown request method. */
+#define _EVHTTP_REQ_UNKNOWN (1<<15)
+
+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;
+
+/* A client or server connection. */
+struct evhttp_connection {
+ /* we use this tailq only if this connection was created for an http
+ * server */
+ TAILQ_ENTRY(evhttp_connection) next;
+
+ evutil_socket_t fd;
+ struct bufferevent *bufev;
+
+ struct event retry_ev; /* for retrying connects */
+
+ 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;
+
+ size_t max_headers_size;
+ ev_uint64_t max_body_size;
+
+ 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 deferred_cb read_more_deferred_cb;
+
+ struct event_base *base;
+ struct evdns_base *dns_base;
+};
+
+/* A callback for an http server */
+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 evconnlistener *listener;
+};
+
+/* server alias list item. */
+struct evhttp_server_alias {
+ TAILQ_ENTRY(evhttp_server_alias) next;
+
+ char *alias; /* the server alias. */
+};
+
+struct evhttp {
+ /* Next vhost, if this is a vhost. */
+ TAILQ_ENTRY(evhttp) next_vhost;
+
+ /* All listeners for this host */
+ TAILQ_HEAD(boundq, evhttp_bound_socket) sockets;
+
+ TAILQ_HEAD(httpcbq, evhttp_cb) callbacks;
+
+ /* All live connections on this host. */
+ struct evconq connections;
+
+ TAILQ_HEAD(vhostsq, evhttp) virtualhosts;
+
+ TAILQ_HEAD(aliasq, evhttp_server_alias) aliases;
+
+ /* NULL if this server is not a vhost */
+ char *vhost_pattern;
+
+ int timeout;
+
+ size_t default_max_headers_size;
+ ev_uint64_t default_max_body_size;
+
+ /* Bitmask of all HTTP methods that we accept and pass to user
+ * callbacks. */
+ ev_uint16_t allowed_methods;
+
+ /* Fallback callback if all the other callbacks for this connection
+ don't match. */
+ void (*gencb)(struct evhttp_request *req, void *);
+ void *gencbarg;
+
+ struct event_base *base;
+};
+
+/* XXX most of these functions could be static. */
+
+/* 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);
+
+enum message_read_status;
+
+enum message_read_status evhttp_parse_firstline(struct evhttp_request *, struct evbuffer*);
+enum message_read_status evhttp_parse_headers(struct evhttp_request *, struct evbuffer*);
+
+void evhttp_start_read(struct evhttp_connection *);
+
+/* 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 */