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// Copyright (c) 2012 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 "content/browser/resolve_proxy_msg_helper.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/compiler_specific.h"
#include "content/common/view_messages.h"
#include "net/base/net_errors.h"
#include "net/url_request/url_request_context.h"
#include "net/url_request/url_request_context_getter.h"
namespace content {
ResolveProxyMsgHelper::ResolveProxyMsgHelper(
net::URLRequestContextGetter* getter)
: context_getter_(getter),
proxy_service_(NULL) {
}
ResolveProxyMsgHelper::ResolveProxyMsgHelper(net::ProxyService* proxy_service)
: proxy_service_(proxy_service) {
}
bool ResolveProxyMsgHelper::OnMessageReceived(const IPC::Message& message,
bool* message_was_ok) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_EX(ResolveProxyMsgHelper, message, *message_was_ok)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_ResolveProxy, OnResolveProxy)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ResolveProxyMsgHelper::OnResolveProxy(const GURL& url,
IPC::Message* reply_msg) {
// Enqueue the pending request.
pending_requests_.push_back(PendingRequest(url, reply_msg));
// If nothing is in progress, start.
if (pending_requests_.size() == 1)
StartPendingRequest();
}
ResolveProxyMsgHelper::~ResolveProxyMsgHelper() {
// Clear all pending requests if the ProxyService is still alive (if we have a
// default request context or override).
if (!pending_requests_.empty()) {
PendingRequest req = pending_requests_.front();
proxy_service_->CancelPacRequest(req.pac_req);
}
for (PendingRequestList::iterator it = pending_requests_.begin();
it != pending_requests_.end();
++it) {
delete it->reply_msg;
}
pending_requests_.clear();
}
void ResolveProxyMsgHelper::OnResolveProxyCompleted(int result) {
CHECK(!pending_requests_.empty());
const PendingRequest& completed_req = pending_requests_.front();
ViewHostMsg_ResolveProxy::WriteReplyParams(
completed_req.reply_msg, result == net::OK, proxy_info_.ToPacString());
Send(completed_req.reply_msg);
// Clear the current (completed) request.
pending_requests_.pop_front();
// Start the next request.
if (!pending_requests_.empty())
StartPendingRequest();
}
void ResolveProxyMsgHelper::StartPendingRequest() {
PendingRequest& req = pending_requests_.front();
// Verify the request wasn't started yet.
DCHECK(NULL == req.pac_req);
if (context_getter_.get()) {
proxy_service_ = context_getter_->GetURLRequestContext()->proxy_service();
context_getter_ = NULL;
}
// Start the request.
int result = proxy_service_->ResolveProxy(
req.url, &proxy_info_,
base::Bind(&ResolveProxyMsgHelper::OnResolveProxyCompleted,
base::Unretained(this)),
&req.pac_req, net::BoundNetLog());
// Completed synchronously.
if (result != net::ERR_IO_PENDING)
OnResolveProxyCompleted(result);
}
} // namespace content
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