Hi Igor,

I have a module that issues subrequests and passes them through a body filter. It seems that subrequests with zero size are not passed to the body filter. Is this the intended behavior?

Thanks,

Evan

Source:

static ngx_int_t

ngx_http_zip_body_filter(ngx_http_request_t *r,

ngx_chain_t *in)

{

ngx_http_zip_ctx_t *ctx;

ngx_chain_t *chain_link;

int rc;

ngx_log_debug0(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,

"ngx_zip: entering body filter");

if (r != r->main) { /* subrequest */ ...

Excerpts from debug log, main request + non-zero subrequest + zero subrequest... "entering body filter" appears twice, not three times:

2007/08/22 01:21:30 [debug] 26369#0: *1 http output filter "/login/zip?" 2007/08/22 01:21:30 [debug] 26369#0: *1 copy filter: "/login/zip?" 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: entering body filter 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: about to parse 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: parsing response buffer of length 0 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: parsed 2 file names 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: initiating first of 2 subrequest(s) 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: subrequest for "/static/file.txt?" 08102508 2007/08/22 01:21:30 [debug] 26369#0: *1 http subrequest "/static/file.txt?" ... 2007/08/22 01:21:30 [debug] 26369#0: *1 http output filter "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 copy filter: "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 read: 9, 08102D70, 68, 0 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: entering body filter 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: adding file header "jeebus.html" 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: adding file trailer 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: processed 68/68 bytes of file #0 2007/08/22 01:21:30 [debug] 26369#0: *1 http postpone filter "/static/file.txt?" 08102DB4 2007/08/22 01:21:30 [debug] 26369#0: *1 http postpone filter out "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 write new buf t:0 f:0 00000000, pos 08102DF0, size: 54 file: 0, size: 0 2007/08/22 01:21:30 [debug] 26369#0: *1 write new buf t:1 f:0 08102D70, pos 08102D70, size: 68 file: 0, size: 0 2007/08/22 01:21:30 [debug] 26369#0: *1 write new buf t:0 f:0 00000000, pos 08102E64, size: 16 file: 0, size: 0 2007/08/22 01:21:30 [debug] 26369#0: *1 http write filter: l:0 f:0 s:138 2007/08/22 01:21:30 [debug] 26369#0: *1 copy filter: 0 "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 http finalize request: 0, "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 event timer add: 6: 60000:2359976554 2007/08/22 01:21:30 [debug] 26369#0: *1 http parent request: "/login/zip?" 2007/08/22 01:21:30 [debug] 26369#0: *1 http request: "/login/zip?" has postponed 2007/08/22 01:21:30 [debug] 26369#0: *1 http fast subrequest: "/static/file.txt?" done 2007/08/22 01:21:30 [debug] 26369#0: *1 http subrequest done "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: subrequest for "/static/file.txt?" 08102540 ... 2007/08/22 01:21:30 [debug] 26369#0: *1 http write filter: l:0 f:0 s:276 2007/08/22 01:21:30 [debug] 26369#0: *1 copy filter: 0 "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 http finalize request: 0, "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 event timer: 6, old: 2359976554, new: 2359976554 2007/08/22 01:21:30 [debug] 26369#0: *1 http parent request: "/login/zip?" 2007/08/22 01:21:30 [debug] 26369#0: *1 http request: "/login/zip?" has postponed 2007/08/22 01:21:30 [debug] 26369#0: *1 http fast subrequest: "/static/file.txt?" done 2007/08/22 01:21:30 [debug] 26369#0: *1 http subrequest done "/static/file.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 ngx_zip: subrequest for "/static/zero.txt?" 08102578 2007/08/22 01:21:30 [debug] 26369#0: *1 http subrequest "/static/zero.txt?" ... 2007/08/22 01:21:30 [debug] 26369#0: *1 http finalize request: 0, "/static/zero.txt?" 2007/08/22 01:21:30 [debug] 26369#0: *1 event timer: 6, old: 2359976554, new: 2359976554 2007/08/22 01:21:30 [debug] 26369#0: *1 http parent request: "/login/zip?" 2007/08/22 01:21:30 [debug] 26369#0: *1 http request: "/login/zip?" has postponed 2007/08/22 01:21:30 [debug] 26369#0: *1 http fast subrequest: "/static/zero.txt?" done 2007/08/22 01:21:30 [debug] 26369#0: *1 http subrequest done "/static/zero.txt?"