rpcrt4: Wait for available pipe when connecting to busy server.

It's most likely to happen when server just accepted another connection and didn't create a new listening pipe instance yet. Signed-off-by: Jacek Caban <jacek@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

rpcrt4: Wait for available pipe when connecting to busy server.
ac6325e4 · Jacek Caban · Alexandre Julliard · dd16a491 · ac6325e4
Commit ac6325e4 authored Sep 27, 2017 by Jacek Caban Committed by Alexandre Julliard Sep 28, 2017
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rpc_transport.c dlls/rpcrt4/rpc_transport.c +4 -0

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--- a/dlls/rpcrt4/rpc_transport.c
+++ b/dlls/rpcrt4/rpc_transport.c
@@ -153,6 +153,10 @@ static RPC_STATUS rpcrt4_conn_open_pipe(RpcConnection *Connection, LPCSTR pname,
    if (pipe != INVALID_HANDLE_VALUE) break;
    err = GetLastError();
    if (err == ERROR_PIPE_BUSY) {
+      if (WaitNamedPipeA(pname, NMPWAIT_USE_DEFAULT_WAIT)) {
+        TRACE("retrying busy server\n");
+        continue;
+      }
      TRACE("connection failed, error=%x\n", err);
      return RPC_S_SERVER_TOO_BUSY;
    }