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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "headless/lib/browser/protocol/headless_devtools_session.h"
#include "base/command_line.h"
#include "content/public/browser/devtools_agent_host.h"
#include "content/public/browser/devtools_agent_host_client.h"
#include "content/public/browser/devtools_agent_host_client_channel.h"
#include "headless/lib/browser/protocol/browser_handler.h"
#include "headless/lib/browser/protocol/headless_handler.h"
#include "headless/lib/browser/protocol/page_handler.h"
#include "headless/lib/browser/protocol/target_handler.h"
#include "third_party/inspector_protocol/crdtp/cbor.h"
#include "third_party/inspector_protocol/crdtp/dispatch.h"
#include "third_party/inspector_protocol/crdtp/json.h"
namespace headless {
namespace protocol {
HeadlessDevToolsSession::HeadlessDevToolsSession(
base::WeakPtr<HeadlessBrowserImpl> browser,
content::DevToolsAgentHostClientChannel* channel)
: browser_(browser), dispatcher_(this), client_channel_(channel) {
CHECK(client_channel_->GetClient()->IsTrusted())
<< "Connection to headless requires a trusted client";
content::DevToolsAgentHost* agent_host = channel->GetAgentHost();
if (agent_host->GetWebContents() &&
agent_host->GetType() == content::DevToolsAgentHost::kTypePage) {
AddHandler(std::make_unique<HeadlessHandler>(browser_.get(),
agent_host->GetWebContents()));
AddHandler(std::make_unique<PageHandler>(agent_host,
agent_host->GetWebContents()));
}
AddHandler(
std::make_unique<BrowserHandler>(browser_.get(), agent_host->GetId()));
AddHandler(std::make_unique<TargetHandler>(browser_.get()));
}
HeadlessDevToolsSession::~HeadlessDevToolsSession() {
for (auto& handler : handlers_)
handler->Disable();
}
void HeadlessDevToolsSession::HandleCommand(
base::span<const uint8_t> message,
content::DevToolsManagerDelegate::NotHandledCallback callback) {
if (!browser_) {
std::move(callback).Run(message);
return;
}
crdtp::Dispatchable dispatchable(crdtp::SpanFrom(message));
// content::DevToolsSession receives this message first, so we may
// assume it's ok.
DCHECK(dispatchable.ok());
crdtp::UberDispatcher::DispatchResult dispatched =
dispatcher_.Dispatch(dispatchable);
if (!dispatched.MethodFound()) {
std::move(callback).Run(message);
return;
}
pending_commands_[dispatchable.CallId()] = std::move(callback);
dispatched.Run();
}
void HeadlessDevToolsSession::AddHandler(
std::unique_ptr<protocol::DomainHandler> handler) {
handler->Wire(&dispatcher_);
handlers_.push_back(std::move(handler));
}
// The following methods handle responses or notifications coming from
// the browser to the client.
void HeadlessDevToolsSession::SendProtocolResponse(
int call_id,
std::unique_ptr<Serializable> message) {
pending_commands_.erase(call_id);
client_channel_->DispatchProtocolMessageToClient(message->Serialize());
}
void HeadlessDevToolsSession::SendProtocolNotification(
std::unique_ptr<Serializable> message) {
client_channel_->DispatchProtocolMessageToClient(message->Serialize());
}
void HeadlessDevToolsSession::FlushProtocolNotifications() {}
void HeadlessDevToolsSession::FallThrough(int call_id,
crdtp::span<uint8_t> method,
crdtp::span<uint8_t> message) {
auto callback = std::move(pending_commands_[call_id]);
pending_commands_.erase(call_id);
std::move(callback).Run(message);
}
} // namespace protocol
} // namespace headless
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