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135 lines
3.7 KiB
135 lines
3.7 KiB
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "common/libs/utils/tcp_socket.h"
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <cerrno>
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#include <android-base/logging.h>
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namespace cuttlefish {
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ClientSocket::ClientSocket(int port)
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: fd_(SharedFD::SocketLocalClient(port, SOCK_STREAM)) {}
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Message ClientSocket::RecvAny(std::size_t length) {
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Message buf(length);
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auto read_count = fd_->Read(buf.data(), buf.size());
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if (read_count < 0) {
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read_count = 0;
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}
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buf.resize(read_count);
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return buf;
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}
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bool ClientSocket::closed() const {
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std::lock_guard<std::mutex> guard(closed_lock_);
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return other_side_closed_;
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}
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Message ClientSocket::Recv(std::size_t length) {
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Message buf(length);
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ssize_t total_read = 0;
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while (total_read < static_cast<ssize_t>(length)) {
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auto just_read = fd_->Read(&buf[total_read], buf.size() - total_read);
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if (just_read <= 0) {
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if (just_read < 0) {
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LOG(ERROR) << "read() error: " << strerror(errno);
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}
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{
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std::lock_guard<std::mutex> guard(closed_lock_);
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other_side_closed_ = true;
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}
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return Message{};
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}
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total_read += just_read;
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}
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CHECK(total_read == static_cast<ssize_t>(length));
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return buf;
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}
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ssize_t ClientSocket::SendNoSignal(const uint8_t* data, std::size_t size) {
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std::lock_guard<std::mutex> lock(send_lock_);
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ssize_t written{};
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while (written < static_cast<ssize_t>(size)) {
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if (!fd_->IsOpen()) {
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LOG(ERROR) << "fd_ is closed";
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}
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auto just_written = fd_->Send(data + written, size - written, MSG_NOSIGNAL);
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if (just_written <= 0) {
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LOG(INFO) << "Couldn't write to client: " << strerror(errno);
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{
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std::lock_guard<std::mutex> guard(closed_lock_);
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other_side_closed_ = true;
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}
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return just_written;
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}
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written += just_written;
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}
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return written;
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}
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ssize_t ClientSocket::SendNoSignal(const Message& message) {
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return SendNoSignal(&message[0], message.size());
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}
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ServerSocket::ServerSocket(int port)
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: fd_{SharedFD::SocketLocalServer(port, SOCK_STREAM)} {
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if (!fd_->IsOpen()) {
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LOG(FATAL) << "Couldn't open streaming server on port " << port;
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}
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}
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ClientSocket ServerSocket::Accept() {
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SharedFD client = SharedFD::Accept(*fd_);
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if (!client->IsOpen()) {
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LOG(FATAL) << "Error attemping to accept: " << strerror(errno);
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}
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return ClientSocket{client};
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}
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void AppendInNetworkByteOrder(Message* msg, const std::uint8_t b) {
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msg->push_back(b);
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}
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void AppendInNetworkByteOrder(Message* msg, const std::uint16_t s) {
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const std::uint16_t n = htons(s);
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auto p = reinterpret_cast<const std::uint8_t*>(&n);
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msg->insert(msg->end(), p, p + sizeof n);
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}
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void AppendInNetworkByteOrder(Message* msg, const std::uint32_t w) {
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const std::uint32_t n = htonl(w);
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auto p = reinterpret_cast<const std::uint8_t*>(&n);
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msg->insert(msg->end(), p, p + sizeof n);
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}
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void AppendInNetworkByteOrder(Message* msg, const std::int32_t w) {
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std::uint32_t u{};
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std::memcpy(&u, &w, sizeof u);
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AppendInNetworkByteOrder(msg, u);
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}
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void AppendInNetworkByteOrder(Message* msg, const std::string& str) {
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msg->insert(msg->end(), str.begin(), str.end());
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}
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}
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