Perf improvements: Use default os setting for socket recv buffer size
Perf improvements: Use default os setting for socket recv buffer size

  + This commit https://github.com/fpco/streaming-commons/commit/8e38589efb60d38e10ece0c7987186efd852fffc#diff-8c54fc2d40ad45803c6889efbb0192bbR278 introduce a default fixed size read buffer which is too low for most modern system. Thus it induce a lot of unecessary syscall and cpu usage.
  Use the default OS settings in order to let the user control it with
  ie: /proc/sys/net/ipv4/tcp_rmem

erebe/wstunnel