remove unsafe.Sizeof to fix the packet header size problem
旧版本中使用SimplePacketHeaderSize=unsafe.Sizeof(SimplePacketHeader{}),实际结果=8,与预期的不符,该版本移除了unsafe.Sizeof,手动定义常量SimplePacketHeaderSize=6

NOTE: 升级到该版本后 要关注客户端和服务器的消息头大小是否一致!!!

add write goroutine end notify
写协程结束的时候加个通知,防止某些极端场景下,SendPacket可能会阻塞业务协程

Unregistered proto packets are left to the business layer for processing
未注册消息解码的数据包,返回给业务层处理

Packet add ErrorCode
it's useful for responase a packet with errorcode

add rpc
Full Changelog: v1.1.1...v1.1.2

fix a WebSocket listen problem

support WebSocket and wss

increase compatibility of PacketHandler

use gofmt -s to format codes

fix SimplePacketHeaderSize value
add more test cases to increase code coverage