You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
109 lines
2.8 KiB
109 lines
2.8 KiB
#pragma once
|
|
|
|
/*
|
|
* Copyright (C) 2017 The Android Open Source Project
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include "common/libs/fs/shared_fd.h"
|
|
|
|
#include <unistd.h>
|
|
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <mutex>
|
|
#include <vector>
|
|
|
|
namespace cuttlefish {
|
|
using Message = std::vector<std::uint8_t>;
|
|
|
|
class ServerSocket;
|
|
|
|
// Recv and Send wait until all data has been received or sent.
|
|
// Send is thread safe in this regard, Recv is not.
|
|
class ClientSocket {
|
|
public:
|
|
ClientSocket(ClientSocket&& other) : fd_{other.fd_} {}
|
|
|
|
ClientSocket& operator=(ClientSocket&& other) {
|
|
fd_ = other.fd_;
|
|
return *this;
|
|
}
|
|
|
|
ClientSocket(int port);
|
|
|
|
ClientSocket(const ClientSocket&) = delete;
|
|
ClientSocket& operator=(const ClientSocket&) = delete;
|
|
|
|
Message Recv(std::size_t length);
|
|
// RecvAny will receive whatever is available.
|
|
// An empty message returned indicates error or close.
|
|
Message RecvAny(std::size_t length);
|
|
// Sends are called with MSG_NOSIGNAL to suppress SIGPIPE
|
|
ssize_t SendNoSignal(const std::uint8_t* data, std::size_t size);
|
|
ssize_t SendNoSignal(const Message& message);
|
|
|
|
template <std::size_t N>
|
|
ssize_t SendNoSignal(const std::uint8_t (&data)[N]) {
|
|
return SendNoSignal(data, N);
|
|
}
|
|
|
|
bool closed() const;
|
|
|
|
private:
|
|
friend ServerSocket;
|
|
explicit ClientSocket(SharedFD fd) : fd_(fd) {}
|
|
|
|
SharedFD fd_;
|
|
bool other_side_closed_{};
|
|
mutable std::mutex closed_lock_;
|
|
std::mutex send_lock_;
|
|
};
|
|
|
|
class ServerSocket {
|
|
public:
|
|
explicit ServerSocket(int port);
|
|
|
|
ServerSocket(const ServerSocket&) = delete;
|
|
ServerSocket& operator=(const ServerSocket&) = delete;
|
|
|
|
ClientSocket Accept();
|
|
|
|
private:
|
|
SharedFD fd_;
|
|
};
|
|
|
|
void AppendInNetworkByteOrder(Message* msg, const std::uint8_t b);
|
|
void AppendInNetworkByteOrder(Message* msg, const std::uint16_t s);
|
|
void AppendInNetworkByteOrder(Message* msg, const std::uint32_t w);
|
|
void AppendInNetworkByteOrder(Message* msg, const std::int32_t w);
|
|
void AppendInNetworkByteOrder(Message* msg, const std::string& str);
|
|
|
|
inline void AppendToMessage(Message*) {}
|
|
|
|
template <typename T, typename... Ts>
|
|
void AppendToMessage(Message* msg, T v, Ts... vals) {
|
|
AppendInNetworkByteOrder(msg, v);
|
|
AppendToMessage(msg, vals...);
|
|
}
|
|
|
|
template <typename... Ts>
|
|
Message CreateMessage(Ts... vals) {
|
|
Message m;
|
|
AppendToMessage(&m, vals...);
|
|
return m;
|
|
}
|
|
|
|
} // namespace cuttlefish
|