I have a program that uses javax.xml.ws.Service
to call a remote service defined by a WSDL. This program runs on the Google App Engine which, by default, sets the HTTP connection timeout to 5
seconds{1}. I need to increase this timeout value since this service often takes a long time to respond, but since this request is not being made with URLConnection
, I cannot figure out how to call URLConnection.setReadTimeout(int)
{2}, or otherwise change the timeout.
Is there any way to globally set the HTTP connection timeout on the App Engine? And, for purposes of sharing knowledge, how would one go about solving this sort of problem generally?
{1}: https://developers.google.com/appengine/docs/java/urlfetch/overview#Requests
{2}: http://docs.oracle.com/javase/1.5.0/docs/api/java/net/URLConnection.html#setReadTimeout(int)
The default value is 100,000 milliseconds (100 seconds). To set an infinite timeout, set the property value to InfiniteTimeSpan. A Domain Name System (DNS) query may take up to 15 seconds to return or time out.
A Request-Timeout header is defined for Hypertext Transfer Protocol (HTTP). This end-to-end header informs an origin server and any intermediaries of the maximum time that a client will await a response to its request. A server can use this header to ensure that a timely response is generated.
The default value is 60 seconds. If the value of this stanza entry is set to 0 (or not set), connection timeouts between data fragments are governed instead by the client-connect-timeout stanza entry. The exception to this rule occurs for responses returned over HTTP (TCP).
You could try setting the sun.net.client.defaultConnectTimeout
and sun.net.client.defaultReadTimeout
system properties documented here, e.g.
System.setProperty("sun.net.client.defaultReadTimeout", "30000");
System.setProperty("sun.net.client.defaultConnectTimeout", "30000");
EDIT
Sorry, just re-read and noticed this is on Google App Engine. I don't know for sure, but given the litigious relationship Google and Oracle have lately, I'm guessing GAE doesn't run the Oracle JVM. I'll leave this here in case someone else runs into a similar problem.
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