Dear Friends,
I am reaching out for assistance with an issue I've been experiencing while using the WebRequest function in an MQL4 script/Expert Advisor. I keep receiving an "Invalid URL" error, with the error code 5200, despite my checks indicating that all settings are correct.
Here's a brief rundown of the situation:
I'm trying to send a POST request to the URL http://10.211.55.2:5000/ai using the WebRequest function in MQL4.
I've verified the server is working correctly as I'm able to successfully send a request using a curl command from the command line and get the expected response. Here's the command that works:
curl -X POST -H "Content-Type: application/x-www-form-urlencoded" -d "text=KUMORO" http://10.211.55.2:5000/ai
In MetaTrader 4, I have added the URL http://10.211.55.2:5000 to the 'Allowed URLs for WebRequest' list under 'Tools' -> 'Options' -> 'Expert Advisors'.
I've checked my firewall and antivirus settings to ensure there are no outgoing connection blocks that could prevent MetaTrader 4 from connecting to my server.
Here's the relevant MQL4 code:
Despite following all the recommended steps, I still encounter the Error 5200 whenever I attempt to execute the script.
2023.06.15 23:05:41.270 TestCnxtion AUDUSDb,H1: WebRequest failed. Error code: 5200
(TestCnxtion is my EA, attach to AUDUSDb chart in H1 TF)
Try manually using ping : ping 10.211.55.2
Pinging 10.211.55.2 with 32 bytes of data:
Reply from 10.211.55.2: bytes=32 time<1ms TTL=64
Reply from 10.211.55.2: bytes=32 time<1ms TTL=64
Reply from 10.211.55.2: bytes=32 time<1ms TTL=64
Reply from 10.211.55.2: bytes=32 time<1ms TTL=64
Ping statistics for 10.211.55.2:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
Using Curl : curl -X POST -H "Content-Type: application/x-www-form-urlencoded" -d "text=KUMORO" http://10.211.55.2:5000/ai
Received text (POST - Form): KUMORO
I would appreciate any assistance or insight you guys could provide to help me resolve this issue.
Thank you in advance for your support.
Best Regards,
Kumoro
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Please use the CODE button (Alt-S) when inserting code.
Isn't WebRequest() restricted to port 80 and 443 ?
Forum on trading, automated trading systems and testing trading strategies
Rashid Umarov , 2014.11.10 09:27
You cannot specify the port yourself. The rule applies:
- if the address starts with https://, then port 443. Otherwise, port 80.
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