On a blocking connection, a return of 0 means that the connection was closed, while -1 indicates that an error occurred.

在受阻塞的连接中，该函数返回 0，表示连接已经关闭，而 -1 则表示连接出现错误。

youdao

If, when you click the Next button, you get an error message indicating that the connection was unsuccessful, one or more of the following issues may have occurred.

当您单击Next按钮时，如果得到指示连接不成功的错误消息，则可能出现以下一个或多个问题。

youdao

"Failed to parse the output of 'adb version'", "the connection to adb is down, and a severe error has occurred".

“未能解析输出的“亚洲版“，”亚行的连接，和一个严重的错误”。”

youdao