The operation has timed out

Rajveer singh

8y9.7kVisual Basic .NET

Hi all,

This issue on a particular system, if called with https and call with HTTP then application working fine.

This is the desktop client code here.

HttpWebRequest req = (HttpWebRequest)(HttpWebRequest.Create(public_url + api_ping_url));

req.Method = "POST";

req.KeepAlive = false;

req.ProtocolVersion = HttpVersion.Version10;

req.ContentType = "application/xml";

req.Timeout = 60000;

req.ReadWriteTimeout = 60000;

ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3;

req.Headers.Set(HttpRequestHeader.Authorization, "Basic shdghgdshg==");

6 Replies

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Jeeva Subburaj8y ago
Accepted answer
Yes. It looks like some of the client machine dont support SSL3 protocol on their machine hence its thrown the exception of timed out when the handshake happens.

Thatswhy i asked you to try switching to old TLS protocol to see if it works on that machine
ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls
       | SecurityProtocolType.Tls11
       | SecurityProtocolType.Tls12
       | SecurityProtocolType.Ssl3;
some links for your reference.

https://blogs.msdn.microsoft.com/friis/2017/10/09/troubleshooting-tls-ssl-scenario-2/

https://stackoverflow.com/questions/10822509/the-request-was-aborted-could-not-create-ssl-tls-secure-channel
Rajveer singh8y ago
Subburaj ji This feature implement tommorow and let you know. What I should do in the local machine?
Rajveer singh8y ago
Jeevanatham Subburaj ji,

I got this problem only on 1 or 2 system and no issue on others system. i want ask you, This problem is due to the local system. like local network, firewall any others.
Jeeva Subburaj8y ago
Can you try changing the code below and see if it works.
ServicePointManager.SecurityProtocol = SecurityProtocolType.Ssl3 | SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls12;
Rajveer singh8y ago
Hi Tan,

https mean. https://abc.com
and http mean http://abc.com
problem only on https://abc.com error = timed out problem here
and if client use http://abc.com then working fine.
Bryian Tan8y ago
What do you mean by "if called with https and call with HTTP then application working fine."?