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// Copyright 2020 The Pigweed Authors
//
// 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
//
// https://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.
#pragma once
#include <arpa/inet.h>
#include <netinet/in.h>
#include <stdio.h>
#include <sys/socket.h>
#include <unistd.h>
#include <array>
#include <cstddef>
#include <limits>
#include <span>
#include "pw_stream/stream.h"
namespace pw::stream {
static constexpr int kExitCode = -1;
static constexpr int kInvalidFd = -1;
class SocketStream : public Writer, public Reader {
public:
explicit SocketStream() {}
~SocketStream();
// Listen to the port and return after a client is connected
Status Serve(uint16_t port);
// Connect to a local or remote endpoint. Host must be an IPv4 address. If
// host is nullptr then the locahost address is used instead.
Status Connect(const char* host, uint16_t port);
// Close the socket stream and release all resources
void Close();
private:
Status DoWrite(std::span<const std::byte> data) override;
StatusWithSize DoRead(ByteSpan dest) override;
uint16_t listen_port_ = 0;
int socket_fd_ = kInvalidFd;
int conn_fd_ = kInvalidFd;
struct sockaddr_in sockaddr_client_;
};
} // namespace pw::stream
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