tree 73086b8f83b57f8be9d2afba866aed65135c6dbe
parent fb7091e213e7651d7a0305a4cfec3b45499f43f4
author Baptiste Assmann <bedis9@gmail.com> 1495458790 +0200
committer Willy Tarreau <w@1wt.eu> 1496395821 +0200
encoding latin1

MAJOR: dns: save a copy of the DNS response in struct resolution

Prior this patch, the DNS responses were stored in a pre-allocated
memory area (allocated at HAProxy's startup).
The problem is that this memory is erased for each new DNS responses
received and processed.

This patch removes the global memory allocation (which was not thread
safe by the way) and introduces a storage of the dns response  in the
struct
resolution.
The memory in the struct resolution is also reserved at start up and is
thread safe, since each resolution structure will have its own memory
area.

For now, we simply store the response and use it atomically per
response per server.