feat(socket): 合并socket分支改动

[mengdemao]

直接socket分支开发失败

1. freebsd的某些头文件使用了C++的保留字，造成无法进行编译
2. 移植操作需要stdio.h/stdlib.h等标准头文件,

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 82.45%. Comparing base (bd6235e) to head (730f4fa). Report is 8 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #23 +/- ## ======================================= Coverage 82.45% 82.45% ======================================= Files 6 6 Lines 57 57 Branches 22 22 ======================================= Hits 47 47 Partials 10 10 ``` | [Flag](https://app.codecov.io/gh/mengdemao/lazybsd/pull/23/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=%E5%AD%9F%E5%BE%B7%E8%8C%82) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/mengdemao/lazybsd/pull/23/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=%E5%AD%9F%E5%BE%B7%E8%8C%82) | `82.45% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=%E5%AD%9F%E5%BE%B7%E8%8C%82#carryforward-flags-in-the-pull-request-comment) to find out more.

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