08c2cdbf1d
* try to use a pipe for communication * flush send buffer on the background thread * cleanup * linux fix / linux still use event fd for now * cleanup
99 lines
2.9 KiB
C++
99 lines
2.9 KiB
C++
/*
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* IXSocket.h
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* Author: Benjamin Sergeant
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* Copyright (c) 2017-2018 Machine Zone, Inc. All rights reserved.
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*/
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#pragma once
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#include <string>
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#include <functional>
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#include <mutex>
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#include <atomic>
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#include <vector>
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#ifdef _WIN32
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#include <BaseTsd.h>
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typedef SSIZE_T ssize_t;
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#endif
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#include "IXCancellationRequest.h"
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#include "IXProgressCallback.h"
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#include "IXEventFd.h"
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namespace ix
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{
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enum PollResultType
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{
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PollResultType_ReadyForRead = 0,
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PollResultType_Timeout = 1,
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PollResultType_Error = 2,
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PollResultType_SendRequest = 3,
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PollResultType_CloseRequest = 4
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};
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class Socket {
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public:
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using OnPollCallback = std::function<void(PollResultType)>;
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Socket(int fd = -1);
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virtual ~Socket();
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void configure();
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PollResultType select(int timeoutSecs, int timeoutMs);
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virtual void poll(const OnPollCallback& onPollCallback,
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int timeoutSecs = kDefaultPollTimeout);
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virtual bool wakeUpFromPoll(uint8_t wakeUpCode);
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// Virtual methods
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virtual bool connect(const std::string& url,
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int port,
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std::string& errMsg,
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const CancellationRequest& isCancellationRequested);
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virtual void close();
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virtual ssize_t send(char* buffer, size_t length);
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virtual ssize_t send(const std::string& buffer);
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virtual ssize_t recv(void* buffer, size_t length);
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// Blocking and cancellable versions, working with socket that can be set
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// to non blocking mode. Used during HTTP upgrade.
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bool readByte(void* buffer,
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const CancellationRequest& isCancellationRequested);
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bool writeBytes(const std::string& str,
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const CancellationRequest& isCancellationRequested);
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std::pair<bool, std::string> readLine(
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const CancellationRequest& isCancellationRequested);
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std::pair<bool, std::string> readBytes(
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size_t length,
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const OnProgressCallback& onProgressCallback,
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const CancellationRequest& isCancellationRequested);
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static int getErrno();
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static bool init(); // Required on Windows to initialize WinSocket
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static void cleanup(); // Required on Windows to cleanup WinSocket
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// Used as special codes for pipe communication
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static const uint8_t kSendRequest;
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static const uint8_t kCloseRequest;
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protected:
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void closeSocket(int fd);
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std::atomic<int> _sockfd;
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std::mutex _socketMutex;
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private:
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static const int kDefaultPollTimeout;
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static const int kDefaultPollNoTimeout;
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// Buffer for reading from our socket. That buffer is never resized.
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std::vector<uint8_t> _readBuffer;
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static constexpr size_t kChunkSize = 1 << 15;
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EventFd _eventfd;
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};
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}
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