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94 lines
2.6 KiB
94 lines
2.6 KiB
// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "cast/common/public/cast_socket.h"
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#include "cast/common/channel/message_framer.h"
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#include "cast/common/channel/proto/cast_channel.pb.h"
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#include "util/osp_logging.h"
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namespace openscreen {
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namespace cast {
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using ::cast::channel::CastMessage;
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using message_serialization::DeserializeResult;
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CastSocket::CastSocket(std::unique_ptr<TlsConnection> connection,
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Client* client)
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: connection_(std::move(connection)),
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client_(client),
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socket_id_(g_next_socket_id_++) {
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OSP_DCHECK(client);
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connection_->SetClient(this);
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}
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CastSocket::~CastSocket() {
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connection_->SetClient(nullptr);
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}
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Error CastSocket::Send(const CastMessage& message) {
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if (state_ == State::kError) {
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return Error::Code::kSocketClosedFailure;
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}
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const ErrorOr<std::vector<uint8_t>> out =
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message_serialization::Serialize(message);
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if (!out) {
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return out.error();
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}
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if (!connection_->Send(out.value().data(), out.value().size())) {
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return Error::Code::kAgain;
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}
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return Error::Code::kNone;
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}
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void CastSocket::SetClient(Client* client) {
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OSP_DCHECK(client);
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client_ = client;
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}
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std::array<uint8_t, 2> CastSocket::GetSanitizedIpAddress() {
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IPEndpoint remote = connection_->GetRemoteEndpoint();
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std::array<uint8_t, 2> result;
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uint8_t bytes[16];
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if (remote.address.IsV4()) {
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remote.address.CopyToV4(bytes);
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result[0] = bytes[2];
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result[1] = bytes[3];
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} else {
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remote.address.CopyToV6(bytes);
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result[0] = bytes[14];
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result[1] = bytes[15];
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}
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return result;
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}
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void CastSocket::OnError(TlsConnection* connection, Error error) {
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state_ = State::kError;
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client_->OnError(this, error);
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}
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void CastSocket::OnRead(TlsConnection* connection, std::vector<uint8_t> block) {
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read_buffer_.insert(read_buffer_.end(), block.begin(), block.end());
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// NOTE: Read as many messages as possible out of |read_buffer_| since we only
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// get one callback opportunity for this.
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do {
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ErrorOr<DeserializeResult> message_or_error =
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message_serialization::TryDeserialize(
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absl::Span<uint8_t>(&read_buffer_[0], read_buffer_.size()));
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if (!message_or_error) {
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return;
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}
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read_buffer_.erase(read_buffer_.begin(),
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read_buffer_.begin() + message_or_error.value().length);
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client_->OnMessage(this, std::move(message_or_error.value().message));
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} while (!read_buffer_.empty());
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}
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int CastSocket::g_next_socket_id_ = 1;
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} // namespace cast
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} // namespace openscreen
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