On Sat, Mar 23, 2013 at 02:31:18PM +0100, Kristof Provost wrote: > On 2013-03-22 21:30:08 (+0800), ishare <june.tune.sea@xxxxxxxxx> 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. When one send system api is called , will all data in the buffer be sent out together at one time ? > > 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 majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
