eventlet模块中select出现ValueError错误
问题说明
如果socket句柄是-1, select.select()在判断句柄状态时会报错 ValueError: file descriptor cannot be a negative integer (-1)
而eventlet的select模块没有处理这种异常
出现环境
windows、python3.8、eventlet 0.26 在使用eventlet开发socket程序时, 如果客户端强制中断连接，会出现如下错误
错误描述
1 2 3 | exception: [WinError 10054] 远程主机强迫关闭了一个现有的连接。...ValueError: file descriptor cannot be a negative integer (-1) |
### 解决办法
修改文件eventlet\hubs\selects.py，然后把eventlet重新打包
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 | def wait(self, seconds=None): .... try: r, w, er = select.select(reader_fds, writer_fds, all_fds, seconds) # 捕捉异常并移除句柄-1 except ValueError as e: self.remove_descriptor(-1) return except select.error as e: if support.get_errno(e) == errno.EINTR: return elif support.get_errno(e) in BAD_SOCK: self._remove_bad_fds() return else: raise |
总结
1.很奇怪eventlet怎么没有修复这种兼容性错误?
2.模拟错误的方法 select.select([-1], [], [], 0)
3. socket中断句柄怎么变成了-1，非法的句柄-1又是如何进入eventlet的?
2021年1月09日 23:23
I will really appreciate the writer's choice for choosing this excellent article appropriate to my matter.Here is deep description about the article matter which helped me more. Best T-Shirt