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Entity tags: support in If-Range header.

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This commit is contained in:
Maxim Dounin 2012-07-07 21:21:15 +00:00
parent 13eb6898aa
commit 9c17e4cb66
1 changed files with 29 additions and 5 deletions
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34
src/http/modules/ngx_http_range_filter_module.c
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@ -146,7 +146,8 @@ static ngx_http_output_body_filter_pt ngx_http_next_body_filter;
static ngx_int_t
ngx_http_range_header_filter(ngx_http_request_t *r)
{
time_t if_range;
time_t if_range_time;
ngx_str_t *if_range, *etag;
ngx_http_core_loc_conf_t *clcf;
ngx_http_range_filter_ctx_t *ctx;
@ -176,22 +177,45 @@ ngx_http_range_header_filter(ngx_http_request_t *r)
if (r->headers_in.if_range) {
if_range = &r->headers_in.if_range->value;
if (if_range->len > 2 && if_range->data[if_range->len - 1] == '"') {
if (r->headers_out.etag == NULL) {
goto next_filter;
}
etag = &r->headers_out.etag->value;
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http ir:%V etag:%V", if_range, etag);
if (if_range->len != etag->len
|| ngx_strncmp(if_range->data, etag->data, etag->len) != 0)
{
goto next_filter;
}
goto parse;
}
if (r->headers_out.last_modified_time == (time_t) -1) {
goto next_filter;
}
if_range = ngx_http_parse_time(r->headers_in.if_range->value.data,
r->headers_in.if_range->value.len);
if_range_time = ngx_http_parse_time(if_range->data, if_range->len);
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
"http ir:%d lm:%d",
if_range, r->headers_out.last_modified_time);
if_range_time, r->headers_out.last_modified_time);
if (if_range != r->headers_out.last_modified_time) {
if (if_range_time != r->headers_out.last_modified_time) {
goto next_filter;
}
}
parse:
ctx = ngx_pcalloc(r->pool, sizeof(ngx_http_range_filter_ctx_t));
if (ctx == NULL) {
return NGX_ERROR;