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Problem Report 1562 Details

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    Problem Report Number 1562
    Submitter's Classification Test Suite problem
    State Resolved
    Resolution Test Suite Deficiency (TSD)
    Problem Resolution ID TSD.X.0844
    Raised 2001-10-04 08:00
    Updated 2003-03-13 08:00
    Published 2001-10-05 08:00
    Product Standard Sockets V2 (UNIX 98)
    Certification Program The Open Brand certification program
    Test Suite VSU version 5.1.2
    Test Identification CAPI.os/sockets/listen 2
    Linked Problem Reports TSD4U.00301, (in, old, system)
    Problem Summary TSD4U.00305 The test may fail on some systems due to a timing problem.
    Problem Text
    The reason for the failure is that the test assumes that the accept()
    in the child will be slower than the calls to connect() in the parent. The
    child creates a socket and then calls listen with a backlog queue of size two.
    The test then assumes that if it creates three sockets and calls connect()
    that the third will fail, because the first two are still in the connect queue.

    Since O_NONBLOCK is set on the first 2 sockets, and both received EINPROGRESS
    from connect(), according to the specification for connect() in Networking
    Services, Issue 5, the connections are handled asynchronously, so the test
    has no way of knowing when they will be removed from the queue. Therefore
    it is not reasonable for the test to assume that when the third connect()
    is called, the queue is still full.
    Test Output
    ************************************************************************
    /tset/CAPI.os/sockets/listen/T.listen 2 Failed

    Test Description:
    Base Conditional Conformance
    If the implementation supports a communications domain and a
    connection-oriented socket type:
    A call to int listen(int socket, int backlog) when backlog is greater
    than or equal to 0 shall limit the number of connections in the
    socket's listen queue to that value.

    Test Information:
    PREP: Get VSU_CONNECT_TIMEOUT configuration variable
    TEST: AF_INET SOCK_STREAM
    PREP: Create test sockaddr_in: address = 192.29.78.124, port = 1389
    PREP: Child: create socket
    PREP: Child: bind to socket
    PREP: Child: listen on socket with backlog of 2
    PREP: Child: tell parent ready
    PREP: Child: wait for parent to complete test
    PREP: Create three sockets
    PREP: Wait for child to be ready
    PREP: Connect twice to fill queue
    TEST: Next connect is rejected
    TEST: Return value
    ERROR: connect call succeeded unexpectedly, returned 0

    ************************************************************************

    Review Information

    Review Type TSMA Review
    Start Date null
    Completed null
    Status Complete
    Review Recommendation No Resolution Given
    Review Response
    This is accepted as a fault in the test suite.

    Review Type SA Review
    Start Date null
    Completed null
    Status Complete
    Review Resolution Test Suite Deficiency (TSD)
    Review Conclusion
    This is an agreed Test Suite Deficiency.

    Problem Reporting System Options:

     

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