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  1. JDK
  2. JDK-4616556

ServerSocket timeout behavior change

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    • Icon: Bug Bug
    • Resolution: Duplicate
    • Icon: P4 P4
    • None
    • 1.4.0
    • core-libs
    • None
    • x86
    • windows_2000

      Here is the problem description from the customer reporting the bug.
      I have verified that on solaris with jdk1.4 the test program works as
      they expected so this does appear to be a w2k issue. I have attacted
      the java sources mentioned in the report.

      --
      Steve

      I have attached two Java source files that should reveal the JDK 1.4
      ServerSocket timeout bug that we are seeing. The bug is that sockets
      spawned by a ServerSocket seem to inherit the ServerSocket's timeout
      value. This behavior differs from that in previous (JDK 1.3.1 and
      earlier) releases where the spawned sockets had no initial socket
      timeout value. Note that we are seeing this bug on a Windows 2000
      machine running JDK 1.4 beta 3. We have not tested it on a Solaris box
      yet.

      To test, start the receiver client first ("java Recv") and then start
      the sender client on the same machine with the desired timeout ("java
      Send <timeout in seconds>"). Using a 1.4 VM, a timeout value of 6 or
      greater will cause a socket timeout exception on the receiver client
      while a timeout of 5 or less will work normally. On a 1.3.1 VM the code
      should work with no timeout exceptions regardless of the sender timeout
      value specified.
       
      Other items of note:
      1) A call to getSoTimeout() on a spawned socket in a 1.4 VM will return
      the expected value of zero (0) even though the socket's behavior
      indicates it is using a timeout.
       
      2) A call to setSoTimeout() with a value of zero (0) on a spawned socket
      in a 1.4 VM will deactivate the erroneously inherited timeout.
       
      Note that the information above is contained in a comment block at the
      beginning of each of the source modules.
       
      Ben Ryan
      Alerts, Inc.
      Senior Java Developer

            alanb Alan Bateman
            sgoldman Steve Goldman (Inactive)
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