socket创建位置: 

org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run()

处理socket线程的线程池为:

org.apache.tomcat.util.threads.ThreadPoolExecutor

socket处理线程:

org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run()

socket处理方法:

org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler(AbstractProtocol$AbstractConnectionHandler<S,P>).process(SocketWrapper<S>, SocketStatus)

Protocol process使用Processer:

org.apache.coyote.http11.Http11Processor.process(socket)

Parse Request line: org.apache.coyote.http11.InternalInputBuffer.parseRequestLine(boolean)

Parse Headers:

org.apache.coyote.http11.InternalInputBuffer.parseHeaders()

Prepare request

service request: org.apache.catalina.connector.CoyoteAdapter.service(Request, Response)

当第一次调用request.getParameters()的时候,才分析message body.