From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,97d2772750ae15ad,start X-Google-Attributes: gid103376,public X-Google-Thread: f753e,97d2772750ae15ad,start X-Google-Attributes: gidf753e,public From: Mark McKercher Subject: Extended comm loss and TCP/IP Date: 1999/04/13 Message-ID: <37142321.E3B0C8BE@pacbell.net>#1/1 X-Deja-AN: 466412110 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii X-Complaints-To: abuse@pacbell.net X-Trace: typhoon-sf.pbi.net 924067047 207.215.160.169 (Tue, 13 Apr 1999 22:17:27 PDT) Organization: Pacific Bell Internet Services MIME-Version: 1.0 NNTP-Posting-Date: Tue, 13 Apr 1999 22:17:27 PDT Newsgroups: comp.lang.ada,comp.object.corba Date: 1999-04-13T00:00:00+00:00 List-Id: I'm having the following problem. We're using Ada95 on both Solaris and HP-UX and our orb is ORBexpress. I'm working on a project on which a client workstation might be a satellite link away from the server. Loss of comm may be frequent and sometimes last tens of minutes at a time. Normally, if we issue a CORBA request while comm is down, we'd see a COMM_FAILURE exception. I can deal with that. If comm is lost while in the middle of a CORBA request, if comm is re-established within a reasonable time, then the request will complete normally. I can deal with that too. If comm is lost while in the middle of a CORBA request and it takes 10 or more minutes to re-establish comm, then there is trouble. It appears as though the server side completes the request but abandons the return to the client after 10 minutes. The client, on the otherhand, is waiting infinitely for the return. Hence, the client side is locked up and never frees up. Our orb vendor has looked at the problem and has determined that it is a TCP/IP problem... it never sends any indication to orb of a problem. Has anyone else experienced such problems with TCP/IP and are there any workarounds for such a problem? Thanks for you help! Mark M.