AddCustomDockerStreamHeader behaves indentically to addHeader but allows you to alter the calculated payload size in the header by supplying a sizeOffset to increase/decrease the size stored in the header.

AddDockerStreamHeader prefixes the supplied byte slice with a docker stream header as seen in Dockers stdWriter.Write(p []byte).

TimeoutReader wraps a Reader and allows up to n valid reads after which subsequent reads will return ErrTimeout.

ErrTimeout is thrown when the number of valid reads is exceeded.