The PowerCenter Integration Service can compress SOAP requests and responses to increase the speed and efficiency of sending and receiving messages over the network. To compress SOAP requests and responses, you need to implement compression and decompression at the PowerCenter Integration Service and at the web services host.

To implement compression of SOAP requests and response, the PowerCenter Integration Service uses the zlib compression technique in libcurl library. libcurl uses the compression techniques deflate and gzip to decode SOAP requests and responses. Also, libcurl requests all the supported compression techniques by setting a zero-length string in the Accept-Encoding header on the SOAP message. PowerExchange for Web Services uses gzip or deflate to process SOAP requests and responses.