Resolution:
Description
==========
When sending a document to the Trading Partner via http/s with BC 6.X, the following error occurs:

Header processing error: HTTP/1.1 417 Expectation Failed

Environment
===========
TIBCO BusinessConnect 6.X.X

Cause
===========
BusinessConnect 6.X uses HTTP 1.1 to communicate with trading  partners.  It includes a header:

Expect: 100-Continue

which some older proxy servers cannot handle, which causes the error.


Resolution
==========
This is a known issue which has been address in BC 6.0.2 and BC 6.1. The issue can be resolved  by adding the following property to the BC settings as follows:

1).  Go to Administrator&gtBusinessConnect&gtSystem Settings&gtActivated Protocol Plug-ins and Properties &gtBCb.  A list of properties appear.

2).  Add the following Boolean property:

bc.http.client.expect.header

and make sure it is disabled (unchecked).  This will prevent BC from sending out this header.

3).  Save the settings.

4).  Restart all BC engines.