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/*
* Copyright 2004 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <algorithm>
#include "webrtc/base/httpcommon-inl.h"
#include "webrtc/base/asyncsocket.h"
#include "webrtc/base/common.h"
#include "webrtc/base/httpserver.h"
#include "webrtc/base/logging.h"
#include "webrtc/base/socketstream.h"
#include "webrtc/base/thread.h"
namespace rtc {
///////////////////////////////////////////////////////////////////////////////
// HttpServer
///////////////////////////////////////////////////////////////////////////////
HttpServer::HttpServer() : next_connection_id_(1), closing_(false) {
}
HttpServer::~HttpServer() {
if (closing_) {
LOG(LS_WARNING) << "HttpServer::CloseAll has not completed";
}
for (ConnectionMap::iterator it = connections_.begin();
it != connections_.end();
++it) {
StreamInterface* stream = it->second->EndProcess();
delete stream;
delete it->second;
}
}
int
HttpServer::HandleConnection(StreamInterface* stream) {
int connection_id = next_connection_id_++;
ASSERT(connection_id != HTTP_INVALID_CONNECTION_ID);
Connection* connection = new Connection(connection_id, this);
connections_.insert(ConnectionMap::value_type(connection_id, connection));
connection->BeginProcess(stream);
return connection_id;
}
void
HttpServer::Respond(HttpServerTransaction* transaction) {
int connection_id = transaction->connection_id();
if (Connection* connection = Find(connection_id)) {
connection->Respond(transaction);
} else {
delete transaction;
// We may be tempted to SignalHttpComplete, but that implies that a
// connection still exists.
}
}
void
HttpServer::Close(int connection_id, bool force) {
if (Connection* connection = Find(connection_id)) {
connection->InitiateClose(force);
}
}
void
HttpServer::CloseAll(bool force) {
if (connections_.empty()) {
SignalCloseAllComplete(this);
return;
}
closing_ = true;
std::list<Connection*> connections;
for (ConnectionMap::const_iterator it = connections_.begin();
it != connections_.end(); ++it) {
connections.push_back(it->second);
}
for (std::list<Connection*>::const_iterator it = connections.begin();
it != connections.end(); ++it) {
(*it)->InitiateClose(force);
}
}
HttpServer::Connection*
HttpServer::Find(int connection_id) {
ConnectionMap::iterator it = connections_.find(connection_id);
if (it == connections_.end())
return NULL;
return it->second;
}
void
HttpServer::Remove(int connection_id) {
ConnectionMap::iterator it = connections_.find(connection_id);
if (it == connections_.end()) {
ASSERT(false);
return;
}
Connection* connection = it->second;
connections_.erase(it);
SignalConnectionClosed(this, connection_id, connection->EndProcess());
delete connection;
if (closing_ && connections_.empty()) {
closing_ = false;
SignalCloseAllComplete(this);
}
}
///////////////////////////////////////////////////////////////////////////////
// HttpServer::Connection
///////////////////////////////////////////////////////////////////////////////
HttpServer::Connection::Connection(int connection_id, HttpServer* server)
: connection_id_(connection_id), server_(server),
current_(NULL), signalling_(false), close_(false) {
}
HttpServer::Connection::~Connection() {
// It's possible that an object hosted inside this transaction signalled
// an event which caused the connection to close.
Thread::Current()->Dispose(current_);
}
void
HttpServer::Connection::BeginProcess(StreamInterface* stream) {
base_.notify(this);
base_.attach(stream);
current_ = new HttpServerTransaction(connection_id_);
if (base_.mode() != HM_CONNECT)
base_.recv(&current_->request);
}
StreamInterface*
HttpServer::Connection::EndProcess() {
base_.notify(NULL);
base_.abort(HE_DISCONNECTED);
return base_.detach();
}
void
HttpServer::Connection::Respond(HttpServerTransaction* transaction) {
ASSERT(current_ == NULL);
current_ = transaction;
if (current_->response.begin() == current_->response.end()) {
current_->response.set_error(HC_INTERNAL_SERVER_ERROR);
}
bool keep_alive = HttpShouldKeepAlive(current_->request);
current_->response.setHeader(HH_CONNECTION,
keep_alive ? "Keep-Alive" : "Close",
false);
close_ = !HttpShouldKeepAlive(current_->response);
base_.send(&current_->response);
}
void
HttpServer::Connection::InitiateClose(bool force) {
bool request_in_progress = (HM_SEND == base_.mode()) || (NULL == current_);
if (!signalling_ && (force || !request_in_progress)) {
server_->Remove(connection_id_);
} else {
close_ = true;
}
}
//
// IHttpNotify Implementation
//
HttpError
HttpServer::Connection::onHttpHeaderComplete(bool chunked, size_t& data_size) {
if (data_size == SIZE_UNKNOWN) {
data_size = 0;
}
ASSERT(current_ != NULL);
bool custom_document = false;
server_->SignalHttpRequestHeader(server_, current_, &custom_document);
if (!custom_document) {
current_->request.document.reset(new MemoryStream);
}
return HE_NONE;
}
void
HttpServer::Connection::onHttpComplete(HttpMode mode, HttpError err) {
if (mode == HM_SEND) {
ASSERT(current_ != NULL);
signalling_ = true;
server_->SignalHttpRequestComplete(server_, current_, err);
signalling_ = false;
if (close_) {
// Force a close
err = HE_DISCONNECTED;
}
}
if (err != HE_NONE) {
server_->Remove(connection_id_);
} else if (mode == HM_CONNECT) {
base_.recv(&current_->request);
} else if (mode == HM_RECV) {
ASSERT(current_ != NULL);
// TODO: do we need this?
//request_.document_->rewind();
HttpServerTransaction* transaction = current_;
current_ = NULL;
server_->SignalHttpRequest(server_, transaction);
} else if (mode == HM_SEND) {
Thread::Current()->Dispose(current_->response.document.release());
current_->request.clear(true);
current_->response.clear(true);
base_.recv(&current_->request);
} else {
ASSERT(false);
}
}
void
HttpServer::Connection::onHttpClosed(HttpError err) {
RTC_UNUSED(err);
server_->Remove(connection_id_);
}
///////////////////////////////////////////////////////////////////////////////
// HttpListenServer
///////////////////////////////////////////////////////////////////////////////
HttpListenServer::HttpListenServer() {
SignalConnectionClosed.connect(this, &HttpListenServer::OnConnectionClosed);
}
HttpListenServer::~HttpListenServer() {
}
int HttpListenServer::Listen(const SocketAddress& address) {
AsyncSocket* sock =
Thread::Current()->socketserver()->CreateAsyncSocket(address.family(),
SOCK_STREAM);
if (!sock) {
return SOCKET_ERROR;
}
listener_.reset(sock);
listener_->SignalReadEvent.connect(this, &HttpListenServer::OnReadEvent);
if ((listener_->Bind(address) != SOCKET_ERROR) &&
(listener_->Listen(5) != SOCKET_ERROR))
return 0;
return listener_->GetError();
}
bool HttpListenServer::GetAddress(SocketAddress* address) const {
if (!listener_) {
return false;
}
*address = listener_->GetLocalAddress();
return !address->IsNil();
}
void HttpListenServer::StopListening() {
if (listener_) {
listener_->Close();
}
}
void HttpListenServer::OnReadEvent(AsyncSocket* socket) {
ASSERT(socket == listener_.get());
ASSERT(listener_);
AsyncSocket* incoming = listener_->Accept(NULL);
if (incoming) {
StreamInterface* stream = new SocketStream(incoming);
//stream = new LoggingAdapter(stream, LS_VERBOSE, "HttpServer", false);
HandleConnection(stream);
}
}
void HttpListenServer::OnConnectionClosed(HttpServer* server,
int connection_id,
StreamInterface* stream) {
Thread::Current()->Dispose(stream);
}
///////////////////////////////////////////////////////////////////////////////
} // namespace rtc