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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "services/network/websocket_interceptor.h"
#include "base/functional/bind.h"
#include "net/base/net_errors.h"
#include "services/network/throttling/throttling_controller.h"
#include "services/network/throttling/throttling_network_interceptor.h"
namespace network {
WebSocketInterceptor::WebSocketInterceptor(
uint32_t net_log_source_id,
const GURL& url,
const std::optional<base::UnguessableToken>& throttling_profile_id)
: net_log_source_id_(net_log_source_id),
url_(url),
throttling_token_(
network::ScopedThrottlingToken::MaybeCreate(net_log_source_id_,
throttling_profile_id)) {
throttle_callbacks_[kIncoming] =
base::BindRepeating(&WebSocketInterceptor::ThrottleCallback,
base::Unretained(this), kIncoming);
throttle_callbacks_[kOutgoing] =
base::BindRepeating(&WebSocketInterceptor::ThrottleCallback,
base::Unretained(this), kOutgoing);
}
WebSocketInterceptor::~WebSocketInterceptor() {
auto* throttling_interceptor =
ThrottlingController::GetInterceptor(net_log_source_id_, url_);
if (throttling_interceptor) {
throttling_interceptor->StopThrottle(throttle_callbacks_[kIncoming]);
throttling_interceptor->StopThrottle(throttle_callbacks_[kOutgoing]);
}
}
WebSocketInterceptor::InterceptResult WebSocketInterceptor::Intercept(
FrameDirection direction,
size_t size,
base::OnceClosure retry_callback) {
DCHECK(!pending_callbacks_[direction]);
auto* throttling_interceptor =
ThrottlingController::GetInterceptor(net_log_source_id_, url_);
if (!throttling_interceptor)
return kContinue;
throttling_interceptor->SetSuspendWhenOffline(true);
int start_throttle_result = throttling_interceptor->StartThrottle(
/*result=*/0, size, /*send_end=*/base::TimeTicks(), /*start=*/false,
/*is_upload=*/direction == kOutgoing, throttle_callbacks_[direction]);
if (start_throttle_result == net::ERR_IO_PENDING) {
pending_callbacks_[direction] = std::move(retry_callback);
return kShouldWait;
}
return kContinue;
}
void WebSocketInterceptor::ThrottleCallback(FrameDirection direction,
int result,
int64_t bytes) {
if (pending_callbacks_[direction])
std::move(pending_callbacks_[direction]).Run();
}
} // namespace network
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