TechNote

Flex 2.0.x: No response when using secure AMF channel (SSL) with Internet Explorer and IIS web server

Issue

When using the secure-amf channel with Internet Explorer and HTTPS, Flex remote calls do not receive a response.

Reason

There are a number of possible causes for this problem, but one common cause is a known issue with Internet Explorer and HTTPS requests that receive responses with no-cache HTTP headers.

Solution

You can prevent a Flex Data Services 2 endpoint from sending no-cache headers in a response by specifying the following setting in the secure-amf channel-definition <properties> section in services-config.xml:

<add-no-cache-headers>false</add-no-cache-headers>

Additional Information

It is generally a good idea to test with a browser other than Internet Explorer, such as Firefox, when experiencing this problem to verify whether it might be due to this issue or due to something else.