how to set http timeout using asp?

Question

This is my asp code

<%
http = server.createobject("microsoft.xmlhttp")
http.open "post", servleturl, false
http.setrequestheader "content-type", "application/x-www-form-urlencoded"
http.setrequestheader "accept-encoding", "gzip, deflate"
http.send  "request=" & sxml
http_response = http.responsetext
%>

i need to make TimeOut when the response not come in 15 seconds how?

Answer 1

You can also keep using the synchronous request by calling "SetTimeouts" like this:

<%
Dim http

Set http = Server.CreateObject("MSXML2.ServerXMLHTTP")
http.SetTimeouts 600000, 600000, 15000, 15000
http.Open "post", servleturl, false
http.SetRequestHeader "content-type", "application/x-www-form-urlencoded"
http.SetRequestHeader "accept-encoding", "gzip, deflate"
http.Send  "request=" & sxml

http_response = http.responsetext
%>

See here for docs.

The parameters are:

setTimeouts (long resolveTimeout, long connectTimeout, long sendTimeout, long receiveTimeout)

The setTimeouts method should be called before the open method. None of the parameters is optional.

Answer 2

Using waitForResponse method of ServerXMLHTTP instance after the .Send call is a proper way, I'd recommend.
Also to use .WaitForResponse, need to make an asynchronous call by setting True the third parameter of .Open method.

Const WAIT_TIMEOUT = 15
Dim http
Set http = Server.CreateObject("MSXML2.ServerXMLHTTP")
    http.open "POST", servleturl, True 'async request
    http.setrequestheader "content-type", "application/x-www-form-urlencoded"
    http.setrequestheader "accept-encoding", "gzip, deflate"
    http.send  "request=" & sxml
    If http.waitForResponse(WAIT_TIMEOUT) Then 'response ready
        http_response = http.responseText
    Else 'wait timeout exceeded
        'Handling timeout etc
        'http_response = "TIMEOUT" 
    End If
Set http = Nothing