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Java Forum / First Aid / February 2008SocketException: Unable to find reason
http://pastebin.com/m24efe449 Above is a rudimentary socket program. In the above code I am unable to find why I get SocketException whenever I run the DateClient? I also tried remove sock.close() from DateServer.java, but still no help. > http://pastebin.com/m24efe449 > [quoted text clipped - 3 lines] > whenever I run the DateClient? I also tried remove sock.close() from > DateServer.java, but still no help. Whenever you speak about an Exception, ALWAYS include: type, message, stacktrace. Together with the stacktrace, you must provide the blocks and linenumbers of the code which contains the statements referred to by the stacktrace, insofar as they pertain to your packages. df. >> http://pastebin.com/m24efe449 >> [quoted text clipped - 10 lines] > > df. What Daniele said and you are binding two sockets to the same port.  SignatureKnute Johnson email s/nospam/knute/ ------->>>>>>http://www.NewsDem >>> http://pastebin.com/m24efe449 >>> [quoted text clipped - 13 lines] > > What Daniele said and you are binding two sockets to the same port. No, one of them's a ServerSocket. I don't really see anything wrong with the code. The only source of error I could think of would be to run the client before the server. We'll see when the OP posts his error description. df. >> What Daniele said and you are binding two sockets to the same port. > > No, one of them's a ServerSocket. And event if the sockets are connecting the same port that wouldn't be a problem and you can even bind two serversockets to the same port if you really need that. The same is valid for the source-port of a socket (you need that e.g. for RFC-compliant FTP) Regards, Lothar SignatureLothar Kimmeringer E-Mail: spamfang@kimmeringer.de PGP-encrypted mails preferred (Key-ID: 0x8BC3CD81) Always remember: The answer is forty-two, there can only be wrong questions! >>>> http://pastebin.com/m24efe449 >>>> [quoted text clipped - 20 lines] > > df. D: You're right, I misread that. OP: I compiled and ran it and it works just fine. When are you getting the error? SignatureKnute Johnson email s/nospam/knute/ > http://pastebin.com/m24efe449 > > In the above code I am unable to find why I get SocketException > whenever I run the DateClient? I also tried remove sock.close() from > DateServer.java, but still no help. Still there is a stacktrace missing, but one thing. A PrintWriter might be buffered, so writing to it and closing the underlying socket can lead to the effect, that no data runs the wire. The client tries to read from the InputStream but because of the closing socket this try will lead to an exception (something like "connection reset by peer" or similar). Better flush() the writer/stream and/or close the stream before closing the socket. Regards, Lothar SignatureLothar Kimmeringer E-Mail: spamfang@kimmeringer.de PGP-encrypted mails preferred (Key-ID: 0x8BC3CD81) Always remember: The answer is forty-two, there can only be wrong questions! >> http://pastebin.com/m24efe449 >> [quoted text clipped - 12 lines] > Better flush() the writer/stream and/or close the stream before > closing the socket. Am I reading the thread right, that the code mixes Writers and InputStreams? SignatureLew >>> http://pastebin.com/m24efe449 >>> [quoted text clipped - 15 lines] > Am I reading the thread right, that the code mixes Writers and > InputStreams? Haven't you read the code an the page the OP linked to? >>>> http://pastebin.com/m24efe449 >>>> [quoted text clipped - 17 lines] > > Haven't you read the code an the page the OP linked to? No. Why else would I have asked here? SignatureLew >>>>> http://pastebin.com/m24efe449 >>>>> [quoted text clipped - 19 lines] > > No. Why else would I have asked here? Well, maybe you had read it, but then forgot it, then remembered that you had read it and realised that you had forgotten it, then read it again, and then asked anyway just to make a point. No? Lew wrote: >>>> Am I reading the thread right, that the code mixes Writers and >>>> InputStreams? And the answer is ...? SignatureLew > Lew wrote: >>>>> Am I reading the thread right, that the code mixes Writers and >>>>> InputStreams? > > And the answer is ...? ... yes. >> Lew wrote: >>>>>> Am I reading the thread right, that the code mixes Writers [quoted text clipped - 3 lines] > > .... yes. While on second thought, I think the answer is rather no. It's mixing them in the sense that both occur in the code posted; it's not mixing them in the sense that it uses a Writer to stuff a pipe emptied by an InputStream /directly/; it's not confusing byte-based API with char-based API; it's using Writers and Readers but in an acceptable fashion, gracefully leaving encoding out but that's alright for the scope of the code which is a, or rather two very little programs... read the bloody code it will take a few seconds to realise what would take me a few minutes to write. > Am I reading the thread right, that the code mixes Writers and InputStreams? It's not, but even if this would be the case, what should it matter? Regards, Lothar SignatureLothar Kimmeringer E-Mail: spamfang@kimmeringer.de PGP-encrypted mails preferred (Key-ID: 0x8BC3CD81) Always remember: The answer is forty-two, there can only be wrong questions! 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