nghttp2/src/shrpx_client_handler.h

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/*
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* nghttp2 - HTTP/2.0 C Library
*
* Copyright (c) 2012 Tatsuhiro Tsujikawa
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#ifndef SHRPX_CLIENT_HANDLER_H
#define SHRPX_CLIENT_HANDLER_H
#include "shrpx.h"
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#include <set>
#include <memory>
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#include <event.h>
#include <event2/bufferevent.h>
#include <openssl/ssl.h>
namespace shrpx {
class Upstream;
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class DownstreamConnection;
class Http2Session;
class HttpsUpstream;
class ClientHandler {
public:
ClientHandler(bufferevent *bev,
bufferevent_rate_limit_group *rate_limit_group,
int fd, SSL *ssl, const char *ipaddr);
~ClientHandler();
int on_read();
int on_event();
bufferevent* get_bev() const;
event_base* get_evbase() const;
void set_bev_cb(bufferevent_data_cb readcb, bufferevent_data_cb writecb,
bufferevent_event_cb eventcb);
void set_upstream_timeouts(const timeval *read_timeout,
const timeval *write_timeout);
int validate_next_proto();
const std::string& get_ipaddr() const;
bool get_should_close_after_write() const;
void set_should_close_after_write(bool f);
Upstream* get_upstream();
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void pool_downstream_connection(DownstreamConnection *dconn);
void remove_downstream_connection(DownstreamConnection *dconn);
DownstreamConnection* get_downstream_connection();
size_t get_outbuf_length();
SSL* get_ssl() const;
void set_http2_session(Http2Session *http2session);
Http2Session* get_http2_session() const;
size_t get_left_connhd_len() const;
void set_left_connhd_len(size_t left);
// Call this function when HTTP/2.0 connection header is received at
// the start of the connection.
void direct_http2_upgrade();
// Performs HTTP/2.0 Upgrade from the connection managed by
// |http|. If this function fails, the connection must be
// terminated. This function returns 0 if it succeeds, or -1.
int perform_http2_upgrade(HttpsUpstream *http);
bool get_http2_upgrade_allowed() const;
// Returns upstream scheme, either "http" or "https"
std::string get_upstream_scheme() const;
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void set_tls_handshake(bool f);
bool get_tls_handshake() const;
void set_tls_renegotiation(bool f);
bool get_tls_renegotiation() const;
private:
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std::set<DownstreamConnection*> dconn_pool_;
std::unique_ptr<Upstream> upstream_;
std::string ipaddr_;
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bufferevent *bev_;
// Shared HTTP2 session for each thread. NULL if backend is not
// HTTP2. Not deleted by this object.
Http2Session *http2session_;
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SSL *ssl_;
// The number of bytes of HTTP/2.0 client connection header to read
size_t left_connhd_len_;
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int fd_;
bool should_close_after_write_;
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bool tls_handshake_;
bool tls_renegotiation_;
};
} // namespace shrpx
#endif // SHRPX_CLIENT_HANDLER_H