Possibly unsafe concurrent accesses to SpdyConnection.spdyWriter about okhttp HOT 2 CLOSED

  public synchronized void rstStream(int streamId, int statusCode) throws IOException { ... }
  public synchronized void windowUpdate(int streamId, int deltaWindowSize) throws IOException { ... }

  // Internal state of this connection is guarded by 'this'. No blocking
  // operations may be performed while holding this lock!
  //
  // Socket writes are guarded by spdyWriter.
  //
  // Socket reads are unguarded but are only made by the reader thread.
  //
  // Certain operations (like SYN_STREAM) need to synchronize on both the
  // spdyWriter (to do blocking I/O) and this (to create streams). Such
  // operations must synchronize on 'this' last. This ensures that we never
  // wait for a blocking operation while holding 'this'.