Re: [lwip-users] Partial read on receive callback

[Bill Auerbach]

> I don't want to be picky, but this is potentially confusing to beginners: it should be named receive callback, as tcp_recved() is a function which does something totally

> different ;-)

 

Being clear is not being picky – thanks for making it clearer.

 

> Yep, I introduced that when changing tha httpd to allow request packets to be spanned accross multiple packets. I'm essentially doing the same thing as you do there.

 

I see 2 big differences – my implementation deletes pbufs as each one is exhausted of data and I don’t need to keep track of where in the pbuf I’m resuming from.  Each call for len bytes returns len bytes and the next read is at byte len+1.

 

It would be nice if there were a sanctioned method to do what I did since I see it as very common to want to know how much is received and then read part of or all of that amount when it’s large enough to read.

 

Bill