view src/http/modules/perl/ngx_http_perl_module.h @ 7152:3b635e8fd499

FastCGI: adjust buffer position when parsing incomplete records. Previously, nginx failed to move buffer position when parsing an incomplete record header, and due to this wasn't be able to continue parsing once remaining bytes of the record header were received. This can affect response header parsing, potentially generating spurious errors like "upstream sent unexpected FastCGI request id high byte: 1 while reading response header from upstream". While this is very unlikely, since usually record headers are written in a single buffer, this still can happen in real life, for example, if a record header will be split across two TCP packets and the second packet will be delayed. This does not affect non-buffered response body proxying, due to "buf->pos = buf->last;" at the start of the ngx_http_fastcgi_non_buffered_filter() function. Also this does not affect buffered response body proxying, as each input buffer is only passed to the filter once.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 09 Nov 2017 15:35:20 +0300
parents d620f497c50f
children deebe988cbd7
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_HTTP_PERL_MODULE_H_INCLUDED_
#define _NGX_HTTP_PERL_MODULE_H_INCLUDED_


#include <ngx_config.h>
#include <ngx_core.h>
#include <ngx_http.h>
#include <nginx.h>

#include <EXTERN.h>
#include <perl.h>


typedef ngx_http_request_t   *nginx;

typedef struct {
    ngx_str_t                 filename;
    ngx_str_t                 redirect_uri;
    ngx_str_t                 redirect_args;

    SV                       *next;

    ngx_uint_t                done;       /* unsigned  done:1; */

    ngx_array_t              *variables;  /* array of ngx_http_perl_var_t */

#if (NGX_HTTP_SSI)
    ngx_http_ssi_ctx_t       *ssi;
#endif
} ngx_http_perl_ctx_t;


typedef struct {
    ngx_uint_t    hash;
    ngx_str_t     name;
    ngx_str_t     value;
} ngx_http_perl_var_t;


extern ngx_module_t  ngx_http_perl_module;


/*
 * workaround for "unused variable `Perl___notused'" warning
 * when building with perl 5.6.1
 */
#ifndef PERL_IMPLICIT_CONTEXT
#undef  dTHXa
#define dTHXa(a)
#endif


extern void boot_DynaLoader(pTHX_ CV* cv);


void ngx_http_perl_handle_request(ngx_http_request_t *r);
void ngx_http_perl_sleep_handler(ngx_http_request_t *r);


#endif /* _NGX_HTTP_PERL_MODULE_H_INCLUDED_ */