我编写了用于连接webSocket和的MQL5代码
我得到
Connection to ws://127.0.0.1:8080 failed, error 4014
我的出口何时开始；
我将节点js和websocket("^1.0.29")用于Web套接字服务器；
在文档中为此link编写
该函数只能在EA脚本和脚本中运行，因为它们在自己的执行线程中运行。如果从指示器进行调用，GetLastError()返回错误4014 – 不允许调用该功能。但是我在专家中使用了此功能，并将此文件包含到主要的专家文件中。
const WebSocketServer = require('websocket').server;
const http = require('http');
//-----------------------------socket-------------------------------
let server = http.createServer(function (request, response) {
console.log((new Date()) + ' Received request for ' + request.url);
response.writeHead(404);
response.end();
});
server.listen(8080, function () {
console.log((new Date()) + ' Server is listening on port 8080');
});
wsServer = new WebSocketServer({
httpServer: server,
// You should not use autoAcceptConnections for production
// applications, as it defeats all standard cross-origin protection
// facilities built into the protocol and the browser. You should
// *always* verify the connection's origin and decide whether or not
// to accept it.
autoAcceptConnections: false
});
function originIsAllowed(origin) {
// put logic here to detect whether the specified origin is allowed.
return true;
}
wsServer.on('request', function (request) {
if (!originIsAllowed(request.origin)) {
// Make sure we only accept requests from an allowed origin
request.reject();
console.log((new Date()) + ' Connection from origin ' + request.origin + ' rejected.');
return;
}
let connection = request.accept('', request.origin);
console.log((new Date()) + ' Connection accepted.');
connection.on('message', function (message) {
if (message.type === 'utf8') {
console.log('Received Message: ' + message.utf8Data);
connection.sendUTF(message.utf8Data);
} else if (message.type === 'binary') {
console.log('Received Binary Message of ' + message.binaryData.length + ' bytes');
connection.sendBytes(message.binaryData);
}
});
connection.on('close', function (reasonCode, description) {
console.log((new Date()) + ' Peer ' + connection.remoteAddress + ' disconnected.');
});
});
#property copyright "Copyright 2018, MetaQuotes Software Corp."
#property link "ws://127.0.0.1"
#property version "1.00"
#property description "Add Address to the list of allowed ones in the terminal settings to let the example work"
#property script_show_inputs
input string Address="ws://127.0.0.1";
input int Port =8080;
bool ExtTLS =false;
//+------------------------------------------------------------------+
//| Send command to the server |
//+------------------------------------------------------------------+
bool HTTPSend(int socket,string request)
{
char req[];
int len=StringToCharArray(request,req)-1;
if(len<0)
return(false);
//--- if secure TLS connection is used via the port 443
if(ExtTLS)
return(SocketTlsSend(socket,req,len)==len);
//--- if standard TCP connection is used
return(SocketSend(socket,req,len)==len);
}
//+------------------------------------------------------------------+
//| Read server response |
//+------------------------------------------------------------------+
bool HTTPRecv(int socket,uint timeout)
{
char rsp[];
string result;
uint timeout_check=GetTickCount()+timeout;
//--- read data from sockets till they are still present but not longer than timeout
do
{
uint len=SocketIsReadable(socket);
if(len)
{
int rsp_len;
//--- various reading commands depending on whether the connection is secure or not
if(ExtTLS)
rsp_len=SocketTlsRead(socket,rsp,len);
else
rsp_len=SocketRead(socket,rsp,len,timeout);
//--- analyze the response
if(rsp_len>0)
{
result+=CharArrayToString(rsp,0,rsp_len);
//--- print only the response header
int header_end=StringFind(result,"\r\n\r\n");
if(header_end>0)
{
Print("HTTP answer header received:");
Print(StringSubstr(result,0,header_end));
return(true);
}
}
}
}
while(GetTickCount()<timeout_check && !IsStopped());
return(false);
}
//+------------------------------------------------------------------+
//| Script program start function |
//+------------------------------------------------------------------+
void OnStart()
{
Print("start socket!");
int socket=SocketCreate();
Print(socket);
//--- check the handle
if(socket!=INVALID_HANDLE)
{
//--- connect if all is well
if(SocketConnect(socket,Address,Port,1000))
{
Print("Established connection to ",Address,":",Port);
string subject,issuer,serial,thumbprint;
datetime expiration;
//--- if connection is secured by the certificate, display its data
if(SocketTlsCertificate(socket,subject,issuer,serial,thumbprint,expiration))
{
Print("TLS certificate:");
Print(" Owner: ",subject);
Print(" Issuer: ",issuer);
Print(" Number: ",serial);
Print(" Print: ",thumbprint);
Print(" Expiration: ",expiration);
ExtTLS=true;
}
//--- send GET request to the server
if(HTTPSend(socket,"GET / HTTP/1.1\r\nHost: www.mql5.com\r\n\r\n"))
{
Print("GET request sent");
//--- read the response
if(!HTTPRecv(socket,1000))
Print("Failed to get a response, error ",GetLastError());
}
else
Print("Failed to send GET request, error ",GetLastError());
}
else
{
Print("Connection to ",Address,":",Port," failed, error ",GetLastError());
}
//--- close a socket after using
SocketClose(socket);
}
else
Print("Failed to create a socket, error ",GetLastError());
}