strings.Contains(stack, "os/signal.signal_recv") ||
			strings.Contains(stack, "created by net.startServer") ||
			strings.Contains(stack, "created by testing.RunTests") ||
			strings.Contains(stack, "closeWriteAndWait") ||
			strings.Contains(stack, "testing.Main(") ||
			// These only show up with GOTRACEBACK=2; Issue 5005 (comment 28)
			strings.Contains(stack, "runtime.goexit") ||
			strings.Contains(stack, "created by runtime.gc") ||

	ExportAppendTime                  = appendTime
	ExportRefererForURL               = refererForURL
	ExportServerNewConn               = (*Server).newConn
	ExportCloseWriteAndWait           = (*conn).closeWriteAndWait
	ExportErrRequestCanceled          = errRequestCanceled
	ExportErrRequestCanceledConn      = errRequestCanceledConn
	ExportErrServerClosedIdle         = errServerClosedIdle
	ExportServeFile                   = serveFile

}

var _ closeWriter = (*net.TCPConn)(nil)

// closeWriteAndWait flushes any outstanding data and sends a FIN packet (if
// client is connected via TCP), signaling that we're done. We then
// pause for a bit, hoping the client processes it before any
// subsequent RST.
//
// See https://golang.org/issue/3595
func (c *conn) closeWriteAndWait() {
	c.finalFlush()
	if tcp, ok := c.rwc.(closeWriter); ok {