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Discussion of article "Websockets for MetaTrader 5" - page 3

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Renat Fatkhullin:

I don't have time now, but I should make a set of CSocketRaw, CSocketTLS, CSocketHTTP implementations in the standard MQL5 library.

If I have 8 hours of free time, I will do it.

Thanks, waiting!

Renat Fatkhullin:

I don't have time now, but I should make a set of CSocketRaw, CSocketTLS, CSocketHTTP implementations in the standard MQL5 library.

If I have 8 hours of free time, I will do it.

It is desirable to start with something simple, but really working, for example, to get an answer from wss://echo.websocket.org.

Did you manage to connect via WSS?

Nice work @Francis Dube, Thanks!

Is it possible to create a MQL5 service that acts as the WebSocket server? Do you have some examples?

Renat Fatkhullin:


The question is not related to the article, but is related to the network read function.

I have measured the execution of the SocketTlsReadAvailable() function

double avgDelay = 0.0;
double it = 0.0;

//-----------------------------------------------------------------------------
void Recv()
{
   ulong start = GetMicrosecondCount();
     
   int qtyByte = SocketTlsReadAvailable(socket, buf, len);     
         
   double delay = (GetMicrosecondCount()-start)/1000.0;
         

   avgDelay += delay;
   PrintFormat("Bytes received %d   Total time: %.3f ms   Avg time: %.3f ms", qtyByte, delay, avgDelay/++it);
      
}
2021.08.21 17:34:35.110 Test    Bytes received 142   Total time: 2.860 ms   Avg time: 11.824 ms
2021.08.21 17:34:35.111 Test    Bytes received 852   Total time: 1.131 ms   Avg time: 11.819 ms
2021.08.21 17:34:35.113 Test    Bytes received 710   Total time: 1.874 ms   Avg time: 11.815 ms
2021.08.21 17:34:35.114 Test    Bytes received 142   Total time: 0.668 ms   Avg time: 11.810 ms
2021.08.21 17:34:35.117 Test    Bytes received 142   Total time: 2.551 ms   Avg time: 11.805 ms
2021.08.21 17:34:35.132 Test    Bytes received 0     Total time: 15.564 ms  Avg time: 11.807 ms
2021.08.21 17:34:35.148 Test    Bytes received 0     Total time: 15.616 ms  Avg time: 11.809 ms
2021.08.21 17:34:35.149 Test    Bytes received 0     Total time: 1.383 ms   Avg time: 11.804 ms
2021.08.21 17:34:35.151 Test    Bytes received 710   Total time: 1.855 ms   Avg time: 11.799 ms
2021.08.21 17:34:35.164 Test    Bytes received 142   Total time: 12.117 ms  Avg time: 11.800 ms
2021.08.21 17:34:35.179 Test    Bytes received 0     Total time: 15.530 ms  Avg time: 11.801 ms
2021.08.21 17:34:35.195 Test    Bytes received 0     Total time: 15.542 ms  Avg time: 11.803 ms
2021.08.21 17:34:35.210 Test    Bytes received 0     Total time: 15.570 ms  Avg time: 11.805 ms
2021.08.21 17:34:35.218 Test    Bytes received 0     Total time: 7.363 ms   Avg time: 11.803 ms
2021.08.21 17:34:35.226 Test    Bytes received 142   Total time: 8.143 ms   Avg time: 11.801 ms
2021.08.21 17:34:35.242 Test    Bytes received 0     Total time: 15.549 ms  Avg time: 11.803 ms
2021.08.21 17:34:35.257 Test    Bytes received 0     Total time: 15.554 ms  Avg time: 11.804 ms
2021.08.21 17:34:35.273 Test    Bytes received 0     Total time: 15.351 ms  Avg time: 11.806 ms
***
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***


Why such a large function execution time?
Is it possible to optimise the reading function from your side?

Hey great work, 

I just tested your ea and it did connect to my C# websocket server, however after it connects and sends the message The journal tab spans this error

2022.02.08 07:33:36.176 Websocketclient_test (XAUUSD,M15) [MQL error ID: 5270][Is Socket Readable ][Line: 238][Function: CSocket::Readable]


any idea how I can get this fixed. Also sending back to Mt4 didn't seem to work

@Francis Dube Thank you for this library. There is a small change I had to make for it to work with URLs after /, e.g. /ws/..

However I find that it is not stable and doesn't always work, where as your WinAPI version works lot better.

As this one is a native library, do you have an improved version with the stability issues fixed?

Thank you

Renat Fatkhullin standard library.

There will be 8 hours of free time, I will do.

It's been two years and still no answer.

Can't this function be used as Memory Maping Files?

So that we don't have to rewrite the code and use a ready-made solution.

Of course it is fantastic, but this function should be like this: Write information outside the terminal.

Racheal Samson #:

It's been two years and still no response.

So the promised 3 years wait ... It's not long now - a year to wait ))

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