4.2.9
最后更新于：2022-04-02 06:46:23
# 4.2.9
[TOC]
### 增强
* 新增`Coroutine::defer`方法
### 修复
* 修复 max\_connection 不能超过 10000 的bug([#2134](https://github.com/swoole/swoole-src/issues/2134 "#2134"))
* 修复 Mysql客户端 执行`query CALL`查询后prepare 没清除buffer导致的错误([#2132](https://github.com/swoole/swoole-src/pull/2132 "#2132"))
* 修复 MAXOS`sendfile`的 EAGAIN bug([60023b7](https://github.com/swoole/swoole-src/commit/60023b786c591d1a99eb857f9bbf827431945a75 "60023b7"))
* 改善`onReceive/onPacket`的回调检查
* 使用 zend\_fcall\_info\_cache
* 删除 cidmap，cid将不会被再次重用
* 修复 socket construct failed core dump([02626d7](https://github.com/swoole/swoole-src/commit/02626d771643fa655f9c6cefbff049d5d23514ec "commit"))
* 修复 进程等待waitpid bug([38753b4](https://github.com/swoole/swoole-src/commit/38753b4300704c03cb5cc5add2731ebf18972c34 "38753b4"))
* 修复 swServer\_signal\_handler([#2145](https://github.com/swoole/swoole-src/issues/2145 "#2145"))
* 修复`Swoole\MsgQueue::destroy`的拼写错误([28e4cd4](https://github.com/swoole/swoole-src/commit/28e4cd4041b2e638bea4fc1cee81869210e089df "28e4cd4"))
* 修复 http2 header 太多导致的bug([5a1442a](https://github.com/swoole/swoole-src/commit/5a1442a56ff536182cfbd83db20ac256fd6ecb6f "5a1442a"))
* 修复 hiredis 错误消息缓冲区溢出([2149](https://github.com/swoole/swoole-src/issues/2149 "2149"))
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