Re: seq in tcp protocol
Kristof Provost <[email protected]>
| Newsgroups | org.kernel.vger.linux-newbie |
|---|---|
| Message-ID | <[email protected]> |
On 2013-03-22 21:30:08 (+0800), ishare <[email protected]> wrote: > If I send a buffer with tcp protocol , the data is separated to serveral packets , > each packet will have a seq number with it ,which ensures the recipient read this buffer > in right orfer . > > my question is : how the recipient know which is the end packet of this queue ? Is there > data indicate the total quantity of packets composing this buffer ? > TCP is a stream protocol. There is no concept (at the application level anyway) of packets in TCP. The receiving TCP/IP stack is free to offer the data to the application whenever it decides to, in however many lumps as it decides to. Similarly, the sending TCP/IP stack may decide to wait to send data until it's received more from the sending application before packaging it and sending it to the receiver. You may find http://en.wikipedia.org/wiki/Nagle%27s_algorithm interesting. Regards, Kristof -- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs