Bugzilla – Bug 4669
Receive excessive data
Last modified: 2006-08-18 12:12:58
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OS: Red Hat Linux release 7.3 (Valhalla) kernel: 2.4.20-30.8.legacysmp GT: Globus Toolkit 4.0.1 Flavor: gcc32dbg, gcc32dbgpthr I have a client server model program. The client program was written by C and the Server program was written by Java. The server only reply the receive data from client to client. The client read from stdin and send the read data to server. Next the client receive the data from server and print the receive data to stdout. I have a problem. Excessive data will be received immediately after connection by the server side. Although the client not send data. Example as follows: Start the server. % ant authonly Buildfile: build.xml compile: authonly: Start the client. % ./client example.org 10000 Then, the server output the following logs. [exec] Connected... [exec] Receive excessive data: 1bytes: "48" Why does it receive excessive data?
Created an attachment (id=1039) [details] myProgram.sh
There are two modes for GSI. One that's just plain SSL and another that's SSL with the extra delegation steps. The extra data you are seeing is part of the delegation steps that happen after the SSL handshake is established. So what you are seeing is a mismatch between client and server mode. The server is in plain SSL mode while client is in the 'SSL with delegation' mode. So you have to ensure that both are in the same mode. On the server side (Java) you control the mode by setting the following property: context.setOption(GSSConstants.GSS_MODE, gssMode); where gssMode is either GSIConstants.MODE_SSL or GSIConstants.MODE_GSI; Same sort of properties can be set on the C side of things but I'm unfamiliar with the API.
