hello we are planning to use http chunked protocol to send soap attachments. In this case is it possible to have the primary soap xml message sent in chunks too An illustration is POST / HTTP/1.1 Host: ruthenium Content-Type: multipart/related; boundary=MIME_boundary;type=text/xml;start=<request.xml> Transfer-Encoding:chunked SOAPAction: "" 27D --MIME_boundary Content-Type: text/xml;charset=utf-8 Content-Transfer-Encoding: 8bit Content-ID: <request.xml> Content-Length:498 <?xml version='1.0'?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsd="http://www.w3.org/2000/10/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"> <SOAP-ENV:Header> 10 <User>Administrator</User> <Password></Password> </SOAP-ENV:Header> 20 <SOAP-ENV:Body> <UserLoginReq/> </SOAP-ENV:Body> </SOAP-ENV:Envelope> 646 --MIME_boundary Content-Type: text/xml;charset=utf-8 Content-Transfer-Encoding: 8bit Content-ID: <request.xml> Content-Length:498 .. ATTACHMENT data 0 ((to indicate end of chunk) The highlighted numbers are the HTTP Chunk size. while constructing a very large soap message Is such a format acceptable