How to send a POST with a JSON in a WebRequest() call using MQL4?

Question

I would like to send a POST from MQL4-script, using a JSON-format to a Node-server.

I\'ve tried the webReque

Answer 1

It works well for me, I have someone like this :

string response = SendResquest("POST", "GetPrediction", "[4, 7]", "Content-Type: application/json", 5000);

string SendResquest(string httpType, string methodName, string bodyData = "", string headers = "", int timeout)
{
    uchar bodyDataCharArray[];
    ArrayResize(bodyDataCharArray, StringToCharArray(bodyData, bodyDataCharArray)-1);

    int response = WebRequest(httpType, this.address+methodName, headers, timeout, bodyDataCharArray, this.resultDataCharArray, this.resultHeader);

    string result = CharArrayToString(this.resultDataCharArray); 

    if(response == 200)
        return result;
    Print("Error when trying to call API : ", response);
    return "";
}