When the user submits input on the web page (Figure 34), this allocates a connection from the connection pool and drives the IO, which in turn drives the macro and the host application.
当用户在网络页面上提交输入（图34）时，它会从联系汇处分配一个联系，并驱动IO，这又反过来驱动宏以及主机程序。
The IO then passes the extracted output back to the user's mobile web browser, and the connection is returned to the connection pool to wait for another input request.
IO然后将提取的输出返回至用户的移动网络浏览器，而连接会返回至连接汇处，等待另一个输入请求。
Tomcat uses NIO (Non-blocking IO) to keep the connection alive without wasting the waiting threads.
Tomcat使用NIO（无阻塞IO）来保持连接活动，无需浪费等待中的线程。
Error - error will be called by the container in the case where an IO exception or a similar unrecoverable error occurs on the connection.
Error事件将会被调用当容器遇到了连接的IO异常或是类似的错误。
Error - error will be called by the container in the case where an IO exception or a similar unrecoverable error occurs on the connection.
Error事件将会被调用当容器遇到了连接的IO异常或是类似的错误。
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