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do not pass buf with empty cached response,

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this fixes "zero size buf in output" alert
This commit is contained in:
Igor Sysoev 2009-09-15 15:12:03 +00:00
parent 04c2f085f4
commit d1e9567425
1 changed files with 7 additions and 1 deletions
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8
src/http/ngx_http_file_cache.c
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@ -767,6 +767,7 @@ ngx_http_file_cache_update(ngx_http_request_t *r, ngx_temp_file_t *tf)
ngx_int_t ngx_int_t
ngx_http_cache_send(ngx_http_request_t *r) ngx_http_cache_send(ngx_http_request_t *r)
{ {
off_t size;
ngx_int_t rc; ngx_int_t rc;
ngx_buf_t *b; ngx_buf_t *b;
ngx_chain_t out; ngx_chain_t out;
@ -795,10 +796,15 @@ ngx_http_cache_send(ngx_http_request_t *r)
return rc; return rc;
} }
size = c->length - c->body_start;
if (size == 0) {
return rc;
}
b->file_pos = c->body_start; b->file_pos = c->body_start;
b->file_last = c->length; b->file_last = c->length;
b->in_file = (c->length - c->body_start) ? 1: 0; b->in_file = size ? 1: 0;
b->last_buf = (r == r->main) ? 1: 0; b->last_buf = (r == r->main) ? 1: 0;
b->last_in_chain = 1; b->last_in_chain = 1;