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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "net/spdy/spdy_session_pool.h"
#include "base/logging.h"
#include "net/spdy/spdy_session.h"
namespace net {
// The maximum number of sessions to open to a single domain.
static const size_t kMaxSessionsPerDomain = 1;
int SpdySessionPool::g_max_sessions_per_domain = kMaxSessionsPerDomain;
SpdySessionPool::SpdySessionPool(NetworkChangeNotifier* notifier)
: network_change_notifier_(notifier) {
if (network_change_notifier_)
network_change_notifier_->AddObserver(this);
}
SpdySessionPool::~SpdySessionPool() {
CloseAllSessions();
if (network_change_notifier_)
network_change_notifier_->RemoveObserver(this);
}
scoped_refptr<SpdySession> SpdySessionPool::Get(
const HostPortPair& host_port_pair, HttpNetworkSession* session,
const BoundNetLog& net_log) {
scoped_refptr<SpdySession> spdy_session;
SpdySessionList* list = GetSessionList(host_port_pair);
if (list) {
if (list->size() >= static_cast<unsigned int>(g_max_sessions_per_domain)) {
spdy_session = list->front();
list->pop_front();
}
} else {
list = AddSessionList(host_port_pair);
}
DCHECK(list);
if (!spdy_session)
spdy_session = new SpdySession(host_port_pair, session, net_log.net_log());
DCHECK(spdy_session);
list->push_back(spdy_session);
DCHECK_LE(list->size(), static_cast<unsigned int>(g_max_sessions_per_domain));
return spdy_session;
}
scoped_refptr<SpdySession> SpdySessionPool::GetSpdySessionFromSSLSocket(
const HostPortPair& host_port_pair,
HttpNetworkSession* session,
ClientSocketHandle* connection,
const BoundNetLog& net_log) {
SpdySessionList* list = GetSessionList(host_port_pair);
if (!list)
list = AddSessionList(host_port_pair);
DCHECK(list->empty());
scoped_refptr<SpdySession> spdy_session(
new SpdySession(host_port_pair, session, net_log.net_log()));
spdy_session->InitializeWithSSLSocket(connection);
list->push_back(spdy_session);
return spdy_session;
}
bool SpdySessionPool::HasSession(const HostPortPair& host_port_pair) const {
if (GetSessionList(host_port_pair))
return true;
return false;
}
void SpdySessionPool::Remove(const scoped_refptr<SpdySession>& session) {
SpdySessionList* list = GetSessionList(session->host_port_pair());
DCHECK(list); // We really shouldn't remove if we've already been removed.
if (!list)
return;
list->remove(session);
if (list->empty())
RemoveSessionList(session->host_port_pair());
}
SpdySessionPool::SpdySessionList*
SpdySessionPool::AddSessionList(const HostPortPair& host_port_pair) {
DCHECK(sessions_.find(host_port_pair) == sessions_.end());
SpdySessionPool::SpdySessionList* list = new SpdySessionList();
sessions_[host_port_pair] = list;
return list;
}
SpdySessionPool::SpdySessionList*
SpdySessionPool::GetSessionList(const HostPortPair& host_port_pair) {
SpdySessionsMap::iterator it = sessions_.find(host_port_pair);
if (it == sessions_.end())
return NULL;
return it->second;
}
const SpdySessionPool::SpdySessionList*
SpdySessionPool::GetSessionList(const HostPortPair& host_port_pair) const {
SpdySessionsMap::const_iterator it = sessions_.find(host_port_pair);
if (it == sessions_.end())
return NULL;
return it->second;
}
void SpdySessionPool::RemoveSessionList(const HostPortPair& host_port_pair) {
SpdySessionList* list = GetSessionList(host_port_pair);
if (list) {
delete list;
sessions_.erase(host_port_pair);
} else {
DCHECK(false) << "removing orphaned session list";
}
}
void SpdySessionPool::RemoveAllSessions(bool close) {
while (sessions_.size()) {
SpdySessionList* list = sessions_.begin()->second;
DCHECK(list);
sessions_.erase(sessions_.begin()->first);
while (list->size()) {
scoped_refptr<SpdySession> session = list->front();
list->pop_front();
if (close)
session->CloseAllStreams(net::ERR_ABORTED);
}
delete list;
}
}
} // namespace net
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