Fix memory leak

[zjd87]

No description provided.

[mrpre]

Thanks for report.
c->pool would be destroyed in the end which means there is no memory leaking actually.

[zjd87]

c->pool = peer->pool. peer->pool is not destroy util nginx stop. Because peer->pool is share memory. So ctx->recv.start is not recycled in time, it maybe occupy memory more and more

[mrpre]

I see.
But ngx_pfreewill not free the small block memory in it's pool. ngx_allocand ngx_free should be used for recv.start

[zjd87]

1、First fix memory leak, ctx->recv.start = ngx_palloc(c->pool, ngx_pagesize / 2) ,So use ngx_pfree recycle to pool
2、Secondly, you can optimize small block memory use
So, I advise fix problem 1 firstly, then solve problem 2 ~