Turns Metatrader4 into websockets client.
Note: make sure you have VSredist: https://www.microsoft.com/en-ie/download/details.aspx?id=48145
Copy MQL4 folder to Data folder of mt4 (how to get where is Data folder is localted, open mt4, click File->Open Data Folder or just click Ctrl+Shft+D). In MT4 Navigator (to show Naavigator click Ctrl+N) select Expert Advisors->Advisors. Right click on websockets, select Modify. Editor will be opened, press F7 to compile. Done.