Infinite loop lead to OOM in WebSocket

[yxztj]

In WebSocket.swift(near line 1248)

while !sOperation.isCancelled {
                let stream = s.stream
                let writeBuffer = UnsafeRawPointer(frame!.bytes+total).assumingMemoryBound(to: UInt8.self)
                let len = stream.write(data: Data(bytes: writeBuffer, count: offset-total))
                if len < 0 {
                    var error: Error?
                        let errCode = InternalErrorCode.outputStreamWriteError.rawValue
                        error = s.errorWithDetail("output stream error during write", code: errCode)
                    s.doDisconnect(error)
                    break
                } else {
                    total += len
                }

When the 'len' returned from stream.write is 0(inside write function, 0 is returned when outputStream is nil), therefore 'total' will not be increased, leading to infinite loop.

For a quick fix, is it OK to change the if statement 'len < 0' to 'len <= 0' so the loop would exit through error handling logic, to resolve the issue for now?

[daltoniam]

This has been added in version 3.0.3!