Mercurial > hg > nginx
annotate src/http/modules/ngx_http_not_modified_filter_module.c @ 509:9b8c906f6e63 release-0.1.29
nginx-0.1.29-RELEASE import
*) Feature: the ngx_http_ssi_module supports "include virtual" command.
*) Feature: the ngx_http_ssi_module supports the condition command like
'if expr="$NAME"' and "else" and "endif" commands. Only one nested
level is supported.
*) Feature: the ngx_http_ssi_module supports the DATE_LOCAL and
DATE_GMT variables and "config timefmt" command.
*) Feature: the "ssi_ignore_recycled_buffers" directive.
*) Bugfix: the "echo" command did not show the default value for the
empty QUERY_STRING variable.
*) Change: the ngx_http_proxy_module was rewritten.
*) Feature: the "proxy_redirect", "proxy_pass_request_headers",
"proxy_pass_request_body", and "proxy_method" directives.
*) Feature: the "proxy_set_header" directive. The "proxy_x_var" was
canceled and must be replaced with the proxy_set_header directive.
*) Change: the "proxy_preserve_host" is canceled and must be replaced
with the "proxy_set_header Host $host" and the "proxy_redirect off"
directives, the "proxy_set_header Host $host:$proxy_port" directive
and the appropriate proxy_redirect directives.
*) Change: the "proxy_set_x_real_ip" is canceled and must be replaced
with the "proxy_set_header X-Real-IP $remote_addr" directive.
*) Change: the "proxy_add_x_forwarded_for" is canceled and must be
replaced with
the "proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for"
directive.
*) Change: the "proxy_set_x_url" is canceled and must be replaced with
the "proxy_set_header X-URL http://$host:$server_port$request_uri"
directive.
*) Feature: the "fastcgi_param" directive.
*) Change: the "fastcgi_root", "fastcgi_set_var" and "fastcgi_params"
directive are canceled and must be replaced with the fastcgi_param
directives.
*) Feature: the "index" directive can use the variables.
*) Feature: the "index" directive can be used at http and server levels.
*) Change: the last index only in the "index" directive can be absolute.
*) Feature: the "rewrite" directive can use the variables.
*) Feature: the "internal" directive.
*) Feature: the CONTENT_LENGTH, CONTENT_TYPE, REMOTE_PORT, SERVER_ADDR,
SERVER_PORT, SERVER_PROTOCOL, DOCUMENT_ROOT, SERVER_NAME,
REQUEST_METHOD, REQUEST_URI, and REMOTE_USER variables.
*) Change: nginx now passes the invalid lines in a client request
headers or a backend response header.
*) Bugfix: if the backend did not transfer response for a long time and
the "send_timeout" was less than "proxy_read_timeout", then nginx
returned the 408 response.
*) Bugfix: the segmentation fault was occurred if the backend sent an
invalid line in response header; the bug had appeared in 0.1.26.
*) Bugfix: the segmentation fault may occurred in FastCGI fault
tolerance configuration.
*) Bugfix: the "expires" directive did not remove the previous
"Expires" and "Cache-Control" headers.
*) Bugfix: nginx did not take into account trailing dot in "Host"
header line.
*) Bugfix: the ngx_http_auth_module did not work under Linux.
*) Bugfix: the rewrite directive worked incorrectly, if the arguments
were in a request.
*) Bugfix: nginx could not be built on MacOS X.
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 12 May 2005 14:58:06 +0000 |
parents | d4ea69372b94 |
children | b09ee85d0ac8 |
rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_http.h> |
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13 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle); |
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16 static ngx_http_module_t ngx_http_not_modified_filter_module_ctx = { |
509 | 17 NULL, /* preconfiguration */ |
18 NULL, /* postconfiguration */ | |
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20 NULL, /* create main configuration */ |
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21 NULL, /* init main configuration */ |
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22 |
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23 NULL, /* create server configuration */ |
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24 NULL, /* merge server configuration */ |
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25 |
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26 NULL, /* create location configuration */ |
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27 NULL /* merge location configuration */ |
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28 }; |
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29 |
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31 ngx_module_t ngx_http_not_modified_filter_module = { |
509 | 32 NGX_MODULE_V1, |
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33 &ngx_http_not_modified_filter_module_ctx, /* module context */ |
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34 NULL, /* module directives */ |
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35 NGX_HTTP_MODULE, /* module type */ |
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36 ngx_http_not_modified_filter_init, /* init module */ |
461 | 37 NULL /* init process */ |
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38 }; |
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39 |
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41 static ngx_http_output_header_filter_pt ngx_http_next_header_filter; |
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42 |
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44 static ngx_int_t ngx_http_not_modified_header_filter(ngx_http_request_t *r) |
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45 { |
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46 time_t ims; |
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47 |
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48 if (r->headers_out.status != NGX_HTTP_OK |
509 | 49 || r->main |
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50 || r->headers_in.if_modified_since == NULL |
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51 || r->headers_out.last_modified_time == -1) |
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52 { |
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53 return ngx_http_next_header_filter(r); |
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54 } |
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55 |
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56 ims = ngx_http_parse_time(r->headers_in.if_modified_since->value.data, |
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57 r->headers_in.if_modified_since->value.len); |
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58 |
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59 ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0, |
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60 "http ims:%d lm:%d", ims, r->headers_out.last_modified_time); |
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61 |
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62 /* |
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63 * I think that the equality of the dates is correcter |
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64 */ |
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65 |
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66 if (ims != NGX_ERROR && ims == r->headers_out.last_modified_time) { |
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67 r->headers_out.status = NGX_HTTP_NOT_MODIFIED; |
509 | 68 r->headers_out.content_type.len = 0; |
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69 r->headers_out.content_length_n = -1; |
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70 r->headers_out.content_length = NULL; |
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71 #if 0 |
509 | 72 r->headers_out.accept_ranges->hash = 0; |
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73 #endif |
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74 } |
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75 |
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76 return ngx_http_next_header_filter(r); |
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77 } |
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78 |
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79 |
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80 static ngx_int_t ngx_http_not_modified_filter_init(ngx_cycle_t *cycle) |
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81 { |
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82 ngx_http_next_header_filter = ngx_http_top_header_filter; |
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83 ngx_http_top_header_filter = ngx_http_not_modified_header_filter; |
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84 |
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85 return NGX_OK; |
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86 } |