Feature

• Introduce a close callback for sessions to handle ccleanup on disconnection

Feature

• Add new client-side attribute 'maxReconnectAttempts' to represent the max reconnect attempts in maintaining the tcp connetion pool size, the default value is setted to 100.

bugfix

• sync with apache/dubbo-getty v1.5.0, fix bug: add read mutex in gettyWSConn(websocket) struct to prevent data race in ReadMessage()

feature

• sync with apache/dubbo-getty v1.4.12

bug fix

• closing websocket connection returns invalid status code

bug fix

• fix wrong tls config dir path

Enhance:
1 support tls for tcp;
2 remove session.SetRQLen
3 move out task pool from session

Mod: add apl v2

Fix: Send multiple pkgs repetitive by tcp(issue #42)