当前位置: article > 正文

C++使用easywsclient发送websocket包

作者：凡人多烦事01 | 2024-03-06 06:20:47

踩

easywsclient

使用easywsclient发送websocket包

easywsclient源码

easywsclient源码

头文件 easywsclient.hpp

#ifndef EASYWSCLIENT_HPP_20170819_MIOFVASDTNUASZDQPLFD
#define EASYWSCLIENT_HPP_20170819_MIOFVASDTNUASZDQPLFD

// This code comes from:
// https://github.com/dhbaird/easywsclient
//
// To get the latest version:
// wget https://raw.github.com/dhbaird/easywsclient/master/easywsclient.hpp
// wget https://raw.github.com/dhbaird/easywsclient/master/easywsclient.cpp

#include <string>
#include <vector>

namespace easywsclient {

struct Callback_Imp { virtual void operator()(const std::string& message) = 0; };
struct BytesCallback_Imp { virtual void operator()(const std::vector<uint8_t>& message) = 0; };

class WebSocket {
  public:
    typedef WebSocket * pointer;
    typedef enum readyStateValues { CLOSING, CLOSED, CONNECTING, OPEN } readyStateValues;

    // Factories:
    static pointer create_dummy();
    static pointer from_url(const std::string& url, const std::string& origin = std::string());
    static pointer from_url_no_mask(const std::string& url, const std::string& origin = std::string());

    // Interfaces:
    virtual ~WebSocket() { }
    virtual void poll(int timeout = 0) = 0; // timeout in milliseconds
    virtual void send(const std::string& message) = 0;
    virtual void sendBinary(const std::string& message) = 0;
    virtual void sendBinary(const std::vector<uint8_t>& message) = 0;
    virtual void sendPing() = 0;
    virtual void close() = 0;
    virtual readyStateValues getReadyState() const = 0;

    template<class Callable>
    void dispatch(Callable callable)
        // For callbacks that accept a string argument.
    { // N.B. this is compatible with both C++11 lambdas, functors and C function pointers
        struct _Callback : public Callback_Imp {
            Callable& callable;
            _Callback(Callable& callable) : callable(callable) { }
            void operator()(const std::string& message) { callable(message); }
        };
        _Callback callback(callable);
        _dispatch(callback);
    }

    template<class Callable>
    void dispatchBinary(Callable callable)
        // For callbacks that accept a std::vector<uint8_t> argument.
    { // N.B. this is compatible with both C++11 lambdas, functors and C function pointers
        struct _Callback : public BytesCallback_Imp {
            Callable& callable;
            _Callback(Callable& callable) : callable(callable) { }
            void operator()(const std::vector<uint8_t>& message) { callable(message); }
        };
        _Callback callback(callable);
        _dispatchBinary(callback);
    }

  protected:
    virtual void _dispatch(Callback_Imp& callable) = 0;
    virtual void _dispatchBinary(BytesCallback_Imp& callable) = 0;
};

} // namespace easywsclient

#endif /* EASYWSCLIENT_HPP_20120819_MIOFVASDTNUASZDQPLFD */

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73

源文件 easywsclient.cpp

#include "stdafx.h"
#ifdef _WIN32
    #if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)
        #define _CRT_SECURE_NO_WARNINGS // _CRT_SECURE_NO_WARNINGS for sscanf errors in MSVC2013 Express
    #endif
    #ifndef WIN32_LEAN_AND_MEAN
        #define WIN32_LEAN_AND_MEAN
    #endif
    #include <fcntl.h>
    #include <WinSock2.h>
    #include <WS2tcpip.h>
    #pragma comment( lib, "ws2_32" )
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <sys/types.h>
    #include <io.h>
    #ifndef _SSIZE_T_DEFINED
        typedef int ssize_t;
        #define _SSIZE_T_DEFINED
    #endif
    #ifndef _SOCKET_T_DEFINED
        typedef SOCKET socket_t;
        #define _SOCKET_T_DEFINED
    #endif
    #ifndef snprintf
        #define snprintf _snprintf_s
    #endif
    #if _MSC_VER >=1600
        // vs2010 or later
        #include <stdint.h>
    #else
        typedef __int8 int8_t;
        typedef unsigned __int8 uint8_t;
        typedef __int32 int32_t;
        typedef unsigned __int32 uint32_t;
        typedef __int64 int64_t;
        typedef unsigned __int64 uint64_t;
    #endif
    #define socketerrno WSAGetLastError()
    #define SOCKET_EAGAIN_EINPROGRESS WSAEINPROGRESS
    #define SOCKET_EWOULDBLOCK WSAEWOULDBLOCK
#else
    #include <fcntl.h>
    #include <netdb.h>
    #include <netinet/tcp.h>
    #include <stdio.h>
    #include <stdlib.h>
    #include <string.h>
    #include <sys/socket.h>
    #include <sys/time.h>
    #include <sys/types.h>
    #include <unistd.h>
    #include <stdint.h>
    #ifndef _SOCKET_T_DEFINED
        typedef int socket_t;
        #define _SOCKET_T_DEFINED
    #endif
    #ifndef INVALID_SOCKET
        #define INVALID_SOCKET (-1)
    #endif
    #ifndef SOCKET_ERROR
        #define SOCKET_ERROR   (-1)
    #endif
    #define closesocket(s) ::close(s)
    #include <errno.h>
    #define socketerrno errno
    #define SOCKET_EAGAIN_EINPROGRESS EAGAIN
    #define SOCKET_EWOULDBLOCK EWOULDBLOCK
#endif

#include <vector>
#include <string>

#include "easywsclient.hpp"

using easywsclient::Callback_Imp;
using easywsclient::BytesCallback_Imp;

namespace { // private module-only namespace

socket_t hostname_connect(const std::string& hostname, int port) {
    struct addrinfo hints;
    struct addrinfo *result;
    struct addrinfo *p;
    int ret;
    socket_t sockfd = INVALID_SOCKET;
    char sport[16];
    memset(&hints, 0, sizeof(hints));
    hints.ai_family = AF_UNSPEC;
    hints.ai_socktype = SOCK_STREAM;
    _snprintf_s(sport, 16, "%d", port);
    if ((ret = getaddrinfo(hostname.c_str(), sport, &hints, &result)) != 0)
    {
      fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(ret));
      return 1;
    }
    for(p = result; p != NULL; p = p->ai_next)
    {
        sockfd = socket(p->ai_family, p->ai_socktype, p->ai_protocol);
        if (sockfd == INVALID_SOCKET) { continue; }
        if (connect(sockfd, p->ai_addr, p->ai_addrlen) != SOCKET_ERROR) {
            break;
        }
        closesocket(sockfd);
        sockfd = INVALID_SOCKET;
    }
    freeaddrinfo(result);
    return sockfd;
}


class _DummyWebSocket : public easywsclient::WebSocket
{
  public:
    void poll(int timeout) { }
    void send(const std::string& message) { }
    void sendBinary(const std::string& message) { }
    void sendBinary(const std::vector<uint8_t>& message) { }
    void sendPing() { }
    void close() { } 
    readyStateValues getReadyState() const { return CLOSED; }
    void _dispatch(Callback_Imp & callable) { }
    void _dispatchBinary(BytesCallback_Imp& callable) { }
};


class _RealWebSocket : public easywsclient::WebSocket
{
  public:
    // http://tools.ietf.org/html/rfc6455#section-5.2  Base Framing Protocol
    //
    //  0                   1                   2                   3
    //  0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
    // +-+-+-+-+-------+-+-------------+-------------------------------+
    // |F|R|R|R| opcode|M| Payload len |    Extended payload length    |
    // |I|S|S|S|  (4)  |A|     (7)     |             (16/64)           |
    // |N|V|V|V|       |S|             |   (if payload len==126/127)   |
    // | |1|2|3|       |K|             |                               |
    // +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - +
    // |     Extended payload length continued, if payload len == 127  |
    // + - - - - - - - - - - - - - - - +-------------------------------+
    // |                               |Masking-key, if MASK set to 1  |
    // +-------------------------------+-------------------------------+
    // | Masking-key (continued)       |          Payload Data         |
    // +-------------------------------- - - - - - - - - - - - - - - - +
    // :                     Payload Data continued ...                :
    // + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - +
    // |                     Payload Data continued ...                |
    // +---------------------------------------------------------------+
    struct wsheader_type {
        unsigned header_size;
        bool fin;
        bool mask;
        enum opcode_type {
            CONTINUATION = 0x0,
            TEXT_FRAME = 0x1,
            BINARY_FRAME = 0x2,
            CLOSE = 8,
            PING = 9,
            PONG = 0xa,
        } opcode;
        int N0;
        uint64_t N;
        uint8_t masking_key[4];
    };

    std::vector<uint8_t> rxbuf;
    std::vector<uint8_t> txbuf;
    std::vector<uint8_t> receivedData;

    socket_t sockfd;
    readyStateValues readyState;
    bool useMask;

    _RealWebSocket(socket_t sockfd, bool useMask) : sockfd(sockfd), readyState(OPEN), useMask(useMask) {
    }

    readyStateValues getReadyState() const {
      return readyState;
    }

    void poll(int timeout) { // timeout in milliseconds
        if (readyState == CLOSED) {
            if (timeout > 0) {
                timeval tv = { timeout/1000, (timeout%1000) * 1000 };
                select(0, NULL, NULL, NULL, &tv);
            }
            return;
        }
        if (timeout != 0) {
            fd_set rfds;
            fd_set wfds;
            timeval tv = { timeout/1000, (timeout%1000) * 1000 };
            FD_ZERO(&rfds);
            FD_ZERO(&wfds);
            FD_SET(sockfd, &rfds);
            if (txbuf.size()) { FD_SET(sockfd, &wfds); }
            select(sockfd + 1, &rfds, &wfds, 0, timeout > 0 ? &tv : 0);
        }
        while (true) {
            // FD_ISSET(0, &rfds) will be true
            int N = rxbuf.size();
            ssize_t ret;
            rxbuf.resize(N + 1500);
            ret = recv(sockfd, (char*)&rxbuf[0] + N, 1500, 0);
            if (false) { }
            else if (ret < 0 && (socketerrno == SOCKET_EWOULDBLOCK || socketerrno == SOCKET_EAGAIN_EINPROGRESS)) {
                rxbuf.resize(N);
                break;
            }
            else if (ret <= 0) {
                rxbuf.resize(N);
                closesocket(sockfd);
                readyState = CLOSED;
                fputs(ret < 0 ? "Connection error!\n" : "Connection closed!\n", stderr);
                break;
            }
            else {
                rxbuf.resize(N + ret);
            }
        }
        while (txbuf.size()) {
            int ret = ::send(sockfd, (char*)&txbuf[0], txbuf.size(), 0);
            if (false) { } // ??
            else if (ret < 0 && (socketerrno == SOCKET_EWOULDBLOCK || socketerrno == SOCKET_EAGAIN_EINPROGRESS)) {
                break;
            }
            else if (ret <= 0) {
                closesocket(sockfd);
                readyState = CLOSED;
                fputs(ret < 0 ? "Connection error!\n" : "Connection closed!\n", stderr);
                break;
            }
            else {
                txbuf.erase(txbuf.begin(), txbuf.begin() + ret);
            }
        }
        if (!txbuf.size() && readyState == CLOSING) {
            closesocket(sockfd);
            readyState = CLOSED;
        }
    }

    // Callable must have signature: void(const std::string & message).
    // Should work with C functions, C++ functors, and C++11 std::function and
    // lambda:
    //template<class Callable>
    //void dispatch(Callable callable)
    virtual void _dispatch(Callback_Imp & callable) {
        struct CallbackAdapter : public BytesCallback_Imp
            // Adapt void(const std::string<uint8_t>&) to void(const std::string&)
        {
            Callback_Imp& callable;
            CallbackAdapter(Callback_Imp& callable) : callable(callable) { }
            void operator()(const std::vector<uint8_t>& message) {
                std::string stringMessage(message.begin(), message.end());
                callable(stringMessage);
            }
        };
        CallbackAdapter bytesCallback(callable);
        _dispatchBinary(bytesCallback);
    }

    virtual void _dispatchBinary(BytesCallback_Imp & callable) {
        // TODO: consider acquiring a lock on rxbuf...
        while (true) {
            wsheader_type ws;
            if (rxbuf.size() < 2) { return; /* Need at least 2 */ }
            const uint8_t * data = (uint8_t *) &rxbuf[0]; // peek, but don't consume
            ws.fin = (data[0] & 0x80) == 0x80;
            ws.opcode = (wsheader_type::opcode_type) (data[0] & 0x0f);
            ws.mask = (data[1] & 0x80) == 0x80;
            ws.N0 = (data[1] & 0x7f);
            ws.header_size = 2 + (ws.N0 == 126? 2 : 0) + (ws.N0 == 127? 8 : 0) + (ws.mask? 4 : 0);
            if (rxbuf.size() < ws.header_size) { return; /* Need: ws.header_size - rxbuf.size() */ }
            int i = 0;
            if (ws.N0 < 126) {
                ws.N = ws.N0;
                i = 2;
            }
            else if (ws.N0 == 126) {
                ws.N = 0;
                ws.N |= ((uint64_t) data[2]) << 8;
                ws.N |= ((uint64_t) data[3]) << 0;
                i = 4;
            }
            else if (ws.N0 == 127) {
                ws.N = 0;
                ws.N |= ((uint64_t) data[2]) << 56;
                ws.N |= ((uint64_t) data[3]) << 48;
                ws.N |= ((uint64_t) data[4]) << 40;
                ws.N |= ((uint64_t) data[5]) << 32;
                ws.N |= ((uint64_t) data[6]) << 24;
                ws.N |= ((uint64_t) data[7]) << 16;
                ws.N |= ((uint64_t) data[8]) << 8;
                ws.N |= ((uint64_t) data[9]) << 0;
                i = 10;
            }
            if (ws.mask) {
                ws.masking_key[0] = ((uint8_t) data[i+0]) << 0;
                ws.masking_key[1] = ((uint8_t) data[i+1]) << 0;
                ws.masking_key[2] = ((uint8_t) data[i+2]) << 0;
                ws.masking_key[3] = ((uint8_t) data[i+3]) << 0;
            }
            else {
                ws.masking_key[0] = 0;
                ws.masking_key[1] = 0;
                ws.masking_key[2] = 0;
                ws.masking_key[3] = 0;
            }
            if (rxbuf.size() < ws.header_size+ws.N) { return; /* Need: ws.header_size+ws.N - rxbuf.size() */ }

            // We got a whole message, now do something with it:
            if (false) { }
            else if (
                   ws.opcode == wsheader_type::TEXT_FRAME 
                || ws.opcode == wsheader_type::BINARY_FRAME
                || ws.opcode == wsheader_type::CONTINUATION
            ) {
                if (ws.mask) { for (size_t i = 0; i != ws.N; ++i) { rxbuf[i+ws.header_size] ^= ws.masking_key[i&0x3]; } }
                receivedData.insert(receivedData.end(), rxbuf.begin()+ws.header_size, rxbuf.begin()+ws.header_size+(size_t)ws.N);// just feed
                if (ws.fin) {
                    callable((const std::vector<uint8_t>) receivedData);
                    receivedData.erase(receivedData.begin(), receivedData.end());
                    std::vector<uint8_t> ().swap(receivedData);// free memory
                }
            }
            else if (ws.opcode == wsheader_type::PING) {
                if (ws.mask) { for (size_t i = 0; i != ws.N; ++i) { rxbuf[i+ws.header_size] ^= ws.masking_key[i&0x3]; } }
                std::string data(rxbuf.begin()+ws.header_size, rxbuf.begin()+ws.header_size+(size_t)ws.N);
                sendData(wsheader_type::PONG, data.size(), data.begin(), data.end());
            }
            else if (ws.opcode == wsheader_type::PONG) { }
            else if (ws.opcode == wsheader_type::CLOSE) { close(); }
            else { fprintf(stderr, "ERROR: Got unexpected WebSocket message.\n"); close(); }

            rxbuf.erase(rxbuf.begin(), rxbuf.begin() + ws.header_size+(size_t)ws.N);
        }
    }

    void sendPing() {
        std::string empty;
        sendData(wsheader_type::PING, empty.size(), empty.begin(), empty.end());
    }

    void send(const std::string& message) {
        sendData(wsheader_type::TEXT_FRAME, message.size(), message.begin(), message.end());
    }

    void sendBinary(const std::string& message) {
        sendData(wsheader_type::BINARY_FRAME, message.size(), message.begin(), message.end());
    }

    void sendBinary(const std::vector<uint8_t>& message) {
        sendData(wsheader_type::BINARY_FRAME, message.size(), message.begin(), message.end());
    }

    template<class Iterator>
    void sendData(wsheader_type::opcode_type type, uint64_t message_size, Iterator message_begin, Iterator message_end) {
        // TODO:
        // Masking key should (must) be derived from a high quality random
        // number generator, to mitigate attacks on non-WebSocket friendly
        // middleware:
        const uint8_t masking_key[4] = { 0x12, 0x34, 0x56, 0x78 };
        // TODO: consider acquiring a lock on txbuf...
        if (readyState == CLOSING || readyState == CLOSED) { return; }
        std::vector<uint8_t> header;
        header.assign(2 + (message_size >= 126 ? 2 : 0) + (message_size >= 65536 ? 6 : 0) + (useMask ? 4 : 0), 0);
        header[0] = 0x80 | type;
        if (false) { }
        else if (message_size < 126) {
            header[1] = (message_size & 0xff) | (useMask ? 0x80 : 0);
            if (useMask) {
                header[2] = masking_key[0];
                header[3] = masking_key[1];
                header[4] = masking_key[2];
                header[5] = masking_key[3];
            }
        }
        else if (message_size < 65536) {
            header[1] = 126 | (useMask ? 0x80 : 0);
            header[2] = (message_size >> 8) & 0xff;
            header[3] = (message_size >> 0) & 0xff;
            if (useMask) {
                header[4] = masking_key[0];
                header[5] = masking_key[1];
                header[6] = masking_key[2];
                header[7] = masking_key[3];
            }
        }
        else { // TODO: run coverage testing here
            header[1] = 127 | (useMask ? 0x80 : 0);
            header[2] = (message_size >> 56) & 0xff;
            header[3] = (message_size >> 48) & 0xff;
            header[4] = (message_size >> 40) & 0xff;
            header[5] = (message_size >> 32) & 0xff;
            header[6] = (message_size >> 24) & 0xff;
            header[7] = (message_size >> 16) & 0xff;
            header[8] = (message_size >>  8) & 0xff;
            header[9] = (message_size >>  0) & 0xff;
            if (useMask) {
                header[10] = masking_key[0];
                header[11] = masking_key[1];
                header[12] = masking_key[2];
                header[13] = masking_key[3];
            }
        }
        // N.B. - txbuf will keep growing until it can be transmitted over the socket:
        txbuf.insert(txbuf.end(), header.begin(), header.end());
        txbuf.insert(txbuf.end(), message_begin, message_end);
        if (useMask) {
            for (size_t i = 0; i != message_size; ++i) { *(txbuf.end() - message_size + i) ^= masking_key[i&0x3]; }
        }
    }

    void close() {
        if(readyState == CLOSING || readyState == CLOSED) { return; }
        readyState = CLOSING;
        uint8_t closeFrame[6] = {0x88, 0x80, 0x00, 0x00, 0x00, 0x00}; // last 4 bytes are a masking key
        std::vector<uint8_t> header(closeFrame, closeFrame+6);
        txbuf.insert(txbuf.end(), header.begin(), header.end());
    }

};


easywsclient::WebSocket::pointer from_url(const std::string& url, bool useMask, const std::string& origin) {
    char host[128];
    int port;
    char path[128];
    if (url.size() >= 128) {
      fprintf(stderr, "ERROR: url size limit exceeded: %s\n", url.c_str());
      return NULL;
    }
    if (origin.size() >= 200) {
      fprintf(stderr, "ERROR: origin size limit exceeded: %s\n", origin.c_str());
      return NULL;
    }
    if (false) 
	{ 
	}
    else if (sscanf_s(url.c_str(), "ws://%[^:/]:%d/%s", host,128, &port, path,128) == 3) 
	{
    }
    else if (sscanf_s(url.c_str(), "ws://%[^:/]/%s", host,128, path,128) == 2) 
	{
        port = 80;
    }
    else if (sscanf_s(url.c_str(), "ws://%[^:/]:%d", host,128, &port) == 2) 
	{
        path[0] = '\0';
    }
    else if (sscanf_s(url.c_str(), "ws://%[^:/]", host,128) == 1) 
	{
        port = 80;
        path[0] = '\0';
    }
    else 
	{
        fprintf(stderr, "ERROR: Could not parse WebSocket url: %s\n", url.c_str());
        return NULL;
    }

    fprintf(stderr, "easywsclient: connecting: host=%s port=%d path=/%s\n", host, port, path);
    socket_t sockfd = hostname_connect(host, port);
    if (sockfd == INVALID_SOCKET) {
        fprintf(stderr, "Unable to connect to %s:%d\n", host, port);
        return NULL;
    }
    {
        // XXX: this should be done non-blocking,
        char line[256];
        int status;
        int i;
        _snprintf_s(line, 256, "GET /%s HTTP/1.1\r\n", path); ::send(sockfd, line, strlen(line), 0);
        if (port == 80) {
			_snprintf_s(line, 256, "Host: %s\r\n", host); ::send(sockfd, line, strlen(line), 0);
        }
        else {
			_snprintf_s(line, 256, "Host: %s:%d\r\n", host, port); ::send(sockfd, line, strlen(line), 0);
        }
		_snprintf_s(line, 256, "Upgrade: websocket\r\n"); ::send(sockfd, line, strlen(line), 0);
		_snprintf_s(line, 256, "Connection: Upgrade\r\n"); ::send(sockfd, line, strlen(line), 0);
        if (!origin.empty()) {
			_snprintf_s(line, 256, "Origin: %s\r\n", origin.c_str()); ::send(sockfd, line, strlen(line), 0);
        }
		_snprintf_s(line, 256, "Sec-WebSocket-Key: x3JJHMbDL1EzLkh9GBhXDw==\r\n"); ::send(sockfd, line, strlen(line), 0);
		_snprintf_s(line, 256, "Sec-WebSocket-Version: 13\r\n"); ::send(sockfd, line, strlen(line), 0);
		_snprintf_s(line, 256, "\r\n"); ::send(sockfd, line, strlen(line), 0);
        for (i = 0; i < 2 || (i < 255 && line[i-2] != '\r' && line[i-1] != '\n'); ++i) { if (recv(sockfd, line+i, 1, 0) == 0) { return NULL; } }
        line[i] = 0;
        if (i == 255) { fprintf(stderr, "ERROR: Got invalid status line connecting to: %s\n", url.c_str()); return NULL; }
        if (sscanf_s(line, "HTTP/1.1 %d", &status,sizeof(status)) != 1 || status != 101) { fprintf(stderr, "ERROR: Got bad status connecting to %s: %s", url.c_str(), line); return NULL; }
        // TODO: verify response headers,
        while (true) {
            for (i = 0; i < 2 || (i < 255 && line[i-2] != '\r' && line[i-1] != '\n'); ++i) { if (recv(sockfd, line+i, 1, 0) == 0) { return NULL; } }
            if (line[0] == '\r' && line[1] == '\n') { break; }
        }
    }
    int flag = 1;
    setsockopt(sockfd, IPPROTO_TCP, TCP_NODELAY, (char*) &flag, sizeof(flag)); // Disable Nagle's algorithm
#ifdef _WIN32
    u_long on = 1;
    ioctlsocket(sockfd, FIONBIO, &on);
#else
    fcntl(sockfd, F_SETFL, O_NONBLOCK);
#endif
    fprintf(stderr, "Connected to: %s\n", url.c_str());
    return easywsclient::WebSocket::pointer(new _RealWebSocket(sockfd, useMask));
}

} // end of module-only namespace



namespace easywsclient {

WebSocket::pointer WebSocket::create_dummy() {
    static pointer dummy = pointer(new _DummyWebSocket);
    return dummy;
}


WebSocket::pointer WebSocket::from_url(const std::string& url, const std::string& origin) {
    return ::from_url(url, true, origin);
}

WebSocket::pointer WebSocket::from_url_no_mask(const std::string& url, const std::string& origin) {
    return ::from_url(url, false, origin);
}


} // namespace easywsclient

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535

发送消息

bool SendMessage(const string& sMessage)
{
	try
	{
		if (NULL != m_pWebSocket && m_pWebSocket->getReadyState() == easywsclient::WebSocket::OPEN)
		{
			//m_pWebSocket->send(sMessage);
			//加入缓冲队列
			m_SendQueueMutex.lock();
			m_SendQueue.push(sMessage);
			m_SendQueueMutex.unlock();

			return true;
		}
	}
	catch (...)
	{
	}
	
	return false;
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21

接收消息

void MessageHandle(const string& data)
{
	String sMessage = CTool::UTF8ToUnicode(data);
	Json::Value response;
	Json::Reader reader;
	Json::FastWriter writer;
	string sSites;
	if (reader.parse(CTool::UTF8TOANSI(data), response))
	{
		string sEvent = response["event"].asString();
		if ( sEvent == "offlineMessage" )
		{
		}
		else if (sEvent == "message")
		{
			Json::Value msgItem = response["data"];
			CDataManager::CChatRecord chatRecord;
		}
		else if (sEvent == "test1")
		{

			return;
		}

	}
}

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

建立连接，持续发送心跳包

	easywsclient::WebSocket::pointer m_pWebSocket;
	string m_sUrl;
	queue<string> m_SendQueue;
	std::mutex    m_SendQueueMutex;
	std::mutex    m_SendMuex;


void WebSocketMessageLoop()
{
	//开始建立连接
	m_pWebSocket = easywsclient::WebSocket::from_url(m_sUrl);
	if (NULL != m_pWebSocket)
	{
	}
	DWORD dwTime = GetTickCount();
	while (true)
	{

		if (NULL != m_pWebSocket)
		{
			try
			{
				m_pWebSocket->poll();
				m_pWebSocket->dispatch(MessageHandle);
				if (m_pWebSocket->getReadyState() == easywsclient::WebSocket::CLOSED && !m_bClosedWebSocket)
				{
					delete m_pWebSocket;
					m_pWebSocket = NULL;
					m_pWebSocket = easywsclient::WebSocket::from_url(m_sUrl);
				}
				else if (m_pWebSocket->getReadyState() == easywsclient::WebSocket::OPEN)
				{
					// 每5秒发送一次心跳
					if (GetTickCount() - dwTime > 5000)
					{
						m_pWebSocket->send("keep alive");
						dwTime = GetTickCount();
					}
					//如果有数据待发
					if (!m_SendQueue.empty())
					{
						string sMessage;
						while (1)
						{
							m_SendQueueMutex.lock();
							if (!m_SendQueue.empty())
							{
								sMessage = m_SendQueue.front();
								m_SendQueue.pop();
							}
							else
							{
								m_SendQueueMutex.unlock();
								break;
							}
							m_SendQueueMutex.unlock();
							m_pWebSocket->send(sMessage);
						}
					}
				}
			}
			catch (...)
			{
				//如果websocket被关闭 并且 不是主动关闭websocket,才会重新连接
				if (m_pWebSocket->getReadyState() == easywsclient::WebSocket::CLOSED)
				{
					delete m_pWebSocket;
					m_pWebSocket = NULL;
					m_pWebSocket = easywsclient::WebSocket::from_url(m_sUrl);
				}
			}
			
		}
		else
		{
			if (m_bClosedWebSocket == false)
			{
				m_pWebSocket = easywsclient::WebSocket::from_url(m_sUrl);
			}
			Sleep(100);
		}
		Sleep(100);
	}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84

easywsclient下载

下载地址.

声明：本文内容由网友自发贡献，不代表【wpsshop博客】立场，版权归原作者所有，本站不承担相应法律责任。如您发现有侵权的内容，请联系我们。转载请注明出处：https://www.wpsshop.cn/w/凡人多烦事01/article/detail/196449