Revert "for bug#194, open pipe for each connection."

This reverts commit ade81bb2441b656c0f6fa37b2969ba9e01e80f21.
Revert "for bug #194, add pipe to consumer."

This reverts commit 1e601a6efc86b1ac91bbc9940513c259f478cbdc.
Revert "add srs pipe for bug #194"

This reverts commit f9756ea14c336e6cf122b81246affcec40b3fffa.
Revert "for bug #194, refine the config"

This reverts commit 2a55ae43171c71b8b2a145fc55f5057fb301abc8.