Hello,
I has already read ngx_http_proxy_module.c twice(source code version
1.9.4),Sadness that i'm hadn't find ngx_write_chain_to_file or
ngx_write_chain_to_temp_file function in this source file.
I found other code:
=================================================================================================
line 1551
for ( ;; ) {
ngx_log_debug1(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"proxy output chunk: %d", ngx_buf_size(cl->buf));
size += ngx_buf_size(cl->buf);
if (cl->buf->flush
|| cl->buf->sync
|| ngx_buf_in_memory(cl->buf)
|| cl->buf->in_file)
{
tl = ngx_alloc_chain_link(r->pool);
if (tl == NULL) {
return NGX_ERROR;
}
tl->buf = cl->buf;
*ll = tl;
ll = &tl->next;
}
if (cl->next == NULL) {
break;
}
cl = cl->next;
}
line 1653
out:
rc = ngx_chain_writer(&r->upstream->writer, out);
I guss that nginx get response from buffer and rewrite output buffer directly.
===============================================================================================
line 459
{ ngx_string("proxy_cache_path"),
NGX_HTTP_MAIN_CONF|NGX_CONF_2MORE,
ngx_http_file_cache_set_slot,
NGX_HTTP_MAIN_CONF_OFFSET,
offsetof(ngx_http_proxy_main_conf_t, caches),
&ngx_http_proxy_module },
proxy_cache_path is set to ngx_http_proxy_main_conf_t->caches varible,but it
doesn't be used in proxy moudle's source code to write cache file.
=================================================================================================
What I want to do:
Nginx Call header,body handler like this:
header handle1->header handler2->body handler1->body hander2
Myself module is in:
header handle1->header handler2->body handler1->myself body handle->body
hander2
I want to save response buffer which body handler1 rewrite to a file.
hack988
From: Hung Nguyen
Date: 2015-09-08 11:01
To: nginx-devel
Subject: Re: How to get Original response before gzip or another module filter
rewrite response
Hello,
I don’t know which context you are trying to do, but in order to write a chain
buffer (this’s what contain nginx’s response) to file, you can use
ngx_write_chain_to_file or ngx_write_chain_to_temp_file function.
Many nginx modules already use these function, take a look at
ngx_http_proxy_module for more detail.
—
Hưng
On Sep 7, 2015, at 9:07 PM, hack988 <hack...@163.com> wrote:
Hello everybody:
Is Anyone can anwer my question? thanks very mach;
hack988
From: hack988
Date: 2015-09-05 21:20
To: nginx-devel
Subject: How to get Original response before gzip or another module filter
rewrite response
Dear All:
I'm a beginner for nginx development,Although i'm read Emiller's Guide and
another article about Nginx develop for several days,I still don't know how to
read whole original response buffer chain copy to myself module's temporary
buffer,before another module(gzip,gunzip,gzip_static) rewrite buffer.
How to check another module is written output buffer to diffrent content type?
I want to copy buffer to a file that no compress or chunked.
I'm sorry for my poor english ,thx.
hack988
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