[newbie] trying socket as a replacement for nc

Dan Stromberg drsalists at gmail.com
Thu Dec 12 22:27:16 CET 2013

On Thu, Dec 12, 2013 at 6:16 AM, Grant Edwards <invalid at invalid.invalid> wrote:

>> Sockets reserve the right to split one socket.send() into multiple
>> socket.recv()'s on the other end of the communication, or to aggregate
>> multiple socket.send()'s into a single socket.recv() - pretty much any way
>> the relevant IP stacks and communications equipment feel like for the sake
>> of performance or reliability.
> Just to be pedantic: _TCP_ sockets reserver that right.  UDP sockets
> do not, and do in fact guarantee that each message is discrete.  [It
> appears that the OP is undoubtedly using TCP sockets.]

I haven't done a lot of UDP, but are you pretty sure UDP can't at
least fragment large packets?  What's a router or switch to do if the
Path MTU isn't large enough for an original packet?


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