Hello,
I’m going through Evan M.'s tutorial on Nginx module. In part “4.2.
Anatomy of a Body Filter”, there’s a piece of code like this:
"And hook the buffer into a new chain link:
ngx_chain_t added_link;
added_link.buf = b;
added_link.next = NULL;
Finally, hook the new chain link to the final chain link we found
before:
chain_link->next = added_link;
And reset the “last_buf” variables to reflect reality:
chain_link->buf->last_buf = 0;
added_link->buf->last_buf = 1;"
At the last line, added_link is being used as a structure pointer but at
the beginning it’s defined as a structure. Am i missing something?
Compiler gives error for this incompetible usage.
Thanks
Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,181975,181975#msg-181975
On Thu, Mar 10, 2011 at 11:06 PM, ctasdemir [email protected]
wrote:
At the last line, added_link is being used as a structure pointer but at
the beginning it’s defined as a structure. Am i missing something?
Compiler gives error for this incompetible usage.
If it is a silly C grammatical error, just go ahead and fix it.
BTW,
- we usually use ngx_chain_t pointers rather than plain structures on
the stack
- do not assume nobody writes body filter modules; that is silly.
Cheers,
-agentzh
Didn’t anybody write body filter module?
Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,181975,182737#msg-182737
Thanks for the answer. I’m trying the understand internals of nginx. I
changed it to pointer but still i can’t manage to write end of buffer.
Ok, i’ll keep trying 
Coskun,
Posted at Nginx Forum:
http://forum.nginx.org/read.php?2,181975,182749#msg-182749