HTTP Channel
The HTTP channel transports messages to and from remote objects using the SOAP protocol. All messages are passed through the SOAP formatter, where the message is changed into XML and serialized, and the required SOAP headers are added to the stream. It is also possible to configure the HTTP Channel to use the binary formatter. The resulting data stream is then transported to the target URI using the HTTP protocol.

TCP Channel
The TCP channel uses a binary formatter to serialize all messages to a binary stream and transport the stream to the target URI using the TCP protocol. It is also possible to configure the TCP channel to the SOAP formatter.