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From jeking3 <>
Subject [GitHub] thrift pull request #1497: Do not call workSocket() in TNonblockigServer wit...
Date Tue, 06 Mar 2018 23:24:01 GMT
Github user jeking3 commented on a diff in the pull request:
    --- Diff: lib/cpp/src/thrift/server/TNonblockingServer.cpp ---
    @@ -472,6 +472,18 @@ void TNonblockingServer::TConnection::workSocket() {
         // size known; now get the rest of the frame
    +    // If the socket has more data than the frame header, continue to work on it. This
is not strictly necessary for
    +    // regular sockets, because if there is more data, libevent will fire the event handler
registered for read
    +    // readiness, which will in turn call workSocket(). However, some socket types (such
as TSSLSocket) may have the
    +    // data sitting in their internal buffers and from libevent's perspective, there
is no further data available. In
    +    // that case, not having this workSocket() call here would result in a hang as we
will never get to work the socket,
    +    // despite having more data.
    +    if (tSocket_->hasPendingDataToRead())
    --- End diff --
    I am concerned this can cause an infinite loop if data is always available, since it calls


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