Imp: using gxbytes.Buffer WriteNextBegin/WriteNextEnd

Opt: change timeout to atomic

fix issue 77: process the last package before handle eof error

remove read buffer collection

Rft/code format

fix(*): revert 17b08d to fix timeout error

style(*): format all imports with dubbogo/tools/imports-formatter

* delete session.handleLoop

* fix error codes

* fix unit test

* feat: benckmark

* feat: 添加压测程序

* feat: remove no need info

* feat: del exec file

* feat: fix client's session

* feat: update gomod

* feat: fix imports

* feat: update gomod

* feat: change sessionTimerLoop to heartbeat

* feat: go fmt

* feat: update benchmark client send message

* feat: remove loop_client unreachable code

* increase grNum before starting goroutine

* feat: format

* feat: add dubbo-getty alias

* feat: fix gettyUDPConn recv err
Co-authored-by: watermelon <80680489@qq.com>
Co-authored-by: georgehao <haohongfan@gmail.com>
Co-authored-by: wangoo <wongoo@apache.org>

fix conn data race

feat: format use gofumpt

Ftr: return the total length and write length

Ftr: return write length