TCP sockets in Comet programming

A web server opens a temporary port while sending the response to the clients. In the case of comet programming(streaming), if the response from web ser开发者_运维知识库ver is never going to end, does that mean the web server will always keep the temporary port open for infinite period ?

Depends on the COMET technique:

1. Client sends request to Server - Server sends data (when it has meaningful data to send ;-) - Client receives data - Client closes.

2. Client sends request to Server - Server sends data in "chunk" (chunked transfer) keeping the connection open for as long as it can/instructed to.

It will be open until the server or the client closes the connection.