mirror of
https://github.com/nginx/nginx.git
synced 2024-12-04 22:09:01 +08:00
Proxy: basic HTTP/1.1 support (including keepalive).
By default we still send requests using HTTP/1.0. This may be changed with new proxy_http_version directive.
This commit is contained in:
Maxim Dounin
parent
f2fcf11b25
commit
2fe0a7a0f6
@ -71,6 +71,8 @@ typedef struct {
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ngx_flag_t redirect;
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ngx_uint_t http_version;
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ngx_uint_t headers_hash_max_size;
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ngx_uint_t headers_hash_bucket_size;
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} ngx_http_proxy_loc_conf_t;
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@ -80,6 +82,12 @@ typedef struct {
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ngx_http_status_t status;
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ngx_http_proxy_vars_t vars;
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size_t internal_body_length;
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ngx_uint_t state;
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off_t size;
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off_t length;
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ngx_uint_t head; /* unsigned head:1 */
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} ngx_http_proxy_ctx_t;
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@ -92,6 +100,15 @@ static ngx_int_t ngx_http_proxy_create_request(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_reinit_request(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_process_status_line(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_process_header(ngx_http_request_t *r);
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static ngx_int_t ngx_http_proxy_input_filter_init(void *data);
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static ngx_int_t ngx_http_proxy_copy_filter(ngx_event_pipe_t *p,
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ngx_buf_t *buf);
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static ngx_int_t ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p,
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ngx_buf_t *buf);
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static ngx_int_t ngx_http_proxy_non_buffered_copy_filter(void *data,
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ssize_t bytes);
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static ngx_int_t ngx_http_proxy_non_buffered_chunked_filter(void *data,
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ssize_t bytes);
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static void ngx_http_proxy_abort_request(ngx_http_request_t *r);
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static void ngx_http_proxy_finalize_request(ngx_http_request_t *r,
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ngx_int_t rc);
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@ -157,6 +174,13 @@ static ngx_conf_bitmask_t ngx_http_proxy_next_upstream_masks[] = {
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};
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static ngx_conf_enum_t ngx_http_proxy_http_version[] = {
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{ ngx_string("1.0"), NGX_HTTP_VERSION_10 },
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{ ngx_string("1.1"), NGX_HTTP_VERSION_11 },
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{ ngx_null_string, 0 }
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};
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ngx_module_t ngx_http_proxy_module;
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@ -432,6 +456,13 @@ static ngx_command_t ngx_http_proxy_commands[] = {
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offsetof(ngx_http_proxy_loc_conf_t, upstream.ignore_headers),
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&ngx_http_upstream_ignore_headers_masks },
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{ ngx_string("proxy_http_version"),
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NGX_HTTP_MAIN_CONF|NGX_HTTP_SRV_CONF|NGX_HTTP_LOC_CONF|NGX_CONF_TAKE1,
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ngx_conf_set_enum_slot,
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NGX_HTTP_LOC_CONF_OFFSET,
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offsetof(ngx_http_proxy_loc_conf_t, http_version),
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&ngx_http_proxy_http_version },
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#if (NGX_HTTP_SSL)
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{ ngx_string("proxy_ssl_session_reuse"),
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@ -479,6 +510,7 @@ ngx_module_t ngx_http_proxy_module = {
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static char ngx_http_proxy_version[] = " HTTP/1.0" CRLF;
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static char ngx_http_proxy_version_11[] = " HTTP/1.1" CRLF;
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static ngx_keyval_t ngx_http_proxy_headers[] = {
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@ -486,6 +518,7 @@ static ngx_keyval_t ngx_http_proxy_headers[] = {
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{ ngx_string("Connection"), ngx_string("close") },
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{ ngx_string("Keep-Alive"), ngx_string("") },
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{ ngx_string("Expect"), ngx_string("") },
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{ ngx_string("Upgrade"), ngx_string("") },
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{ ngx_null_string, ngx_null_string }
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};
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@ -610,7 +643,12 @@ ngx_http_proxy_handler(ngx_http_request_t *r)
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return NGX_HTTP_INTERNAL_SERVER_ERROR;
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}
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u->pipe->input_filter = ngx_event_pipe_copy_input_filter;
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u->pipe->input_filter = ngx_http_proxy_copy_filter;
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u->pipe->input_ctx = r;
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u->input_filter_init = ngx_http_proxy_input_filter_init;
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u->input_filter = ngx_http_proxy_non_buffered_copy_filter;
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u->input_filter_ctx = r;
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u->accel = 1;
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@ -866,14 +904,20 @@ ngx_http_proxy_create_request(ngx_http_request_t *r)
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method.len++;
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}
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ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
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if (method.len == 5
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&& ngx_strncasecmp(method.data, (u_char *) "HEAD ", 5) == 0)
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{
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ctx->head = 1;
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}
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len = method.len + sizeof(ngx_http_proxy_version) - 1 + sizeof(CRLF) - 1;
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escape = 0;
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loc_len = 0;
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unparsed_uri = 0;
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ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
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if (plcf->proxy_lengths) {
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uri_len = ctx->vars.uri.len;
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@ -1009,8 +1053,14 @@ ngx_http_proxy_create_request(ngx_http_request_t *r)
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u->uri.len = b->last - u->uri.data;
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b->last = ngx_cpymem(b->last, ngx_http_proxy_version,
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sizeof(ngx_http_proxy_version) - 1);
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if (plcf->http_version == NGX_HTTP_VERSION_11) {
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b->last = ngx_cpymem(b->last, ngx_http_proxy_version_11,
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sizeof(ngx_http_proxy_version_11) - 1);
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} else {
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b->last = ngx_cpymem(b->last, ngx_http_proxy_version,
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sizeof(ngx_http_proxy_version) - 1);
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}
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ngx_memzero(&e, sizeof(ngx_http_script_engine_t));
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@ -1158,8 +1208,11 @@ ngx_http_proxy_reinit_request(ngx_http_request_t *r)
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ctx->status.count = 0;
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ctx->status.start = NULL;
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ctx->status.end = NULL;
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ctx->state = 0;
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r->upstream->process_header = ngx_http_proxy_process_status_line;
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r->upstream->pipe->input_filter = ngx_http_proxy_copy_filter;
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r->upstream->input_filter = ngx_http_proxy_non_buffered_copy_filter;
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r->state = 0;
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return NGX_OK;
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@ -1250,6 +1303,8 @@ ngx_http_proxy_process_header(ngx_http_request_t *r)
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{
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ngx_int_t rc;
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ngx_table_elt_t *h;
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ngx_http_upstream_t *u;
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ngx_http_proxy_ctx_t *ctx;
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ngx_http_upstream_header_t *hh;
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ngx_http_upstream_main_conf_t *umcf;
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@ -1345,6 +1400,30 @@ ngx_http_proxy_process_header(ngx_http_request_t *r)
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h->lowcase_key = (u_char *) "date";
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}
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/* clear content length if response is chunked */
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u = r->upstream;
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if (u->headers_in.chunked) {
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u->headers_in.content_length_n = -1;
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}
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/*
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* set u->keepalive if response has no body; this allows to keep
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* connections alive in case of r->header_only or X-Accel-Redirect
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*/
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ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
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if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
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|| u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
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|| ctx->head
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|| (!u->headers_in.chunked
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&& u->headers_in.content_length_n == 0))
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{
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u->keepalive = !u->headers_in.connection_close;
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}
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return NGX_OK;
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}
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@ -1362,6 +1441,690 @@ ngx_http_proxy_process_header(ngx_http_request_t *r)
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}
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static ngx_int_t
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ngx_http_proxy_input_filter_init(void *data)
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{
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ngx_http_request_t *r = data;
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ngx_http_upstream_t *u;
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ngx_http_proxy_ctx_t *ctx;
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u = r->upstream;
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ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
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ngx_log_debug4(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http proxy filter init s:%d h:%d c:%d l:%O",
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u->headers_in.status_n, ctx->head, u->headers_in.chunked,
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u->headers_in.content_length_n);
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/* as per RFC2616, 4.4 Message Length */
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if (u->headers_in.status_n == NGX_HTTP_NO_CONTENT
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|| u->headers_in.status_n == NGX_HTTP_NOT_MODIFIED
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|| ctx->head)
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{
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/* 1xx, 204, and 304 and replies to HEAD requests */
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/* no 1xx since we don't send Expect and Upgrade */
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u->pipe->length = 0;
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u->length = 0;
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u->keepalive = !u->headers_in.connection_close;
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} else if (u->headers_in.chunked) {
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/* chunked */
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u->pipe->input_filter = ngx_http_proxy_chunked_filter;
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u->pipe->length = 3; /* "0" LF LF */
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u->input_filter = ngx_http_proxy_non_buffered_chunked_filter;
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u->length = -1;
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} else if (u->headers_in.content_length_n == 0) {
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/* empty body: special case as filter won't be called */
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u->pipe->length = 0;
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u->length = 0;
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u->keepalive = !u->headers_in.connection_close;
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} else {
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/* content length or connection close */
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u->pipe->length = u->headers_in.content_length_n;
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u->length = u->headers_in.content_length_n;
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}
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return NGX_OK;
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}
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static ngx_int_t
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ngx_http_proxy_copy_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
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{
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ngx_buf_t *b;
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ngx_chain_t *cl;
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ngx_http_request_t *r;
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if (buf->pos == buf->last) {
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return NGX_OK;
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}
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if (p->free) {
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cl = p->free;
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b = cl->buf;
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p->free = cl->next;
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ngx_free_chain(p->pool, cl);
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} else {
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b = ngx_alloc_buf(p->pool);
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if (b == NULL) {
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return NGX_ERROR;
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}
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}
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ngx_memcpy(b, buf, sizeof(ngx_buf_t));
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b->shadow = buf;
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b->tag = p->tag;
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b->last_shadow = 1;
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b->recycled = 1;
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buf->shadow = b;
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cl = ngx_alloc_chain_link(p->pool);
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if (cl == NULL) {
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return NGX_ERROR;
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}
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cl->buf = b;
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cl->next = NULL;
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "input buf #%d", b->num);
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if (p->in) {
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*p->last_in = cl;
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} else {
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p->in = cl;
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}
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p->last_in = &cl->next;
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if (p->length == -1) {
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return NGX_OK;
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}
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p->length -= b->last - b->pos;
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if (p->length == 0) {
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r = p->input_ctx;
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p->upstream_done = 1;
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r->upstream->keepalive = !r->upstream->headers_in.connection_close;
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} else if (p->length < 0) {
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r = p->input_ctx;
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p->upstream_done = 1;
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ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
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"upstream sent too many data");
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}
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return NGX_OK;
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}
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static ngx_inline ngx_int_t
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ngx_http_proxy_parse_chunked(ngx_http_request_t *r, ngx_buf_t *buf)
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{
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u_char *pos, ch, c;
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ngx_int_t rc;
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ngx_http_proxy_ctx_t *ctx;
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enum {
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sw_chunk_start = 0,
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sw_chunk_size,
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sw_chunk_extension,
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sw_chunk_extension_almost_done,
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sw_chunk_data,
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sw_after_data,
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sw_after_data_almost_done,
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sw_last_chunk_extension,
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sw_last_chunk_extension_almost_done,
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sw_trailer,
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sw_trailer_almost_done,
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sw_trailer_header,
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sw_trailer_header_almost_done
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} state;
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ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
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state = ctx->state;
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if (state == sw_chunk_data && ctx->size == 0) {
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state = sw_after_data;
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}
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rc = NGX_AGAIN;
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for (pos = buf->pos; pos < buf->last; pos++) {
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ch = *pos;
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ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
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"http proxy chunked byte: %02Xd s:%d", ch, state);
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switch (state) {
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case sw_chunk_start:
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if (ch >= '0' && ch <= '9') {
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state = sw_chunk_size;
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ctx->size = ch - '0';
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break;
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}
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c = (u_char) (ch | 0x20);
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if (c >= 'a' && c <= 'f') {
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state = sw_chunk_size;
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ctx->size = c - 'a' + 10;
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break;
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}
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goto invalid;
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case sw_chunk_size:
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if (ch >= '0' && ch <= '9') {
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ctx->size = ctx->size * 16 + (ch - '0');
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break;
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}
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c = (u_char) (ch | 0x20);
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if (c >= 'a' && c <= 'f') {
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ctx->size = ctx->size * 16 + (c - 'a' + 10);
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break;
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}
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if (ctx->size == 0) {
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switch (ch) {
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case CR:
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state = sw_last_chunk_extension_almost_done;
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break;
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case LF:
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state = sw_trailer;
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break;
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case ';':
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state = sw_last_chunk_extension;
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break;
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default:
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goto invalid;
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}
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break;
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}
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switch (ch) {
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case CR:
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state = sw_chunk_extension_almost_done;
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break;
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case LF:
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state = sw_chunk_data;
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break;
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case ';':
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state = sw_chunk_extension;
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break;
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default:
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goto invalid;
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}
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break;
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case sw_chunk_extension:
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switch (ch) {
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case CR:
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state = sw_chunk_extension_almost_done;
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break;
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case LF:
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state = sw_chunk_data;
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}
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break;
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case sw_chunk_extension_almost_done:
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if (ch == LF) {
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state = sw_chunk_data;
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break;
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}
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goto invalid;
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case sw_chunk_data:
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rc = NGX_OK;
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goto data;
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case sw_after_data:
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switch (ch) {
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case CR:
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state = sw_after_data_almost_done;
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break;
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case LF:
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state = sw_chunk_start;
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}
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break;
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case sw_after_data_almost_done:
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if (ch == LF) {
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state = sw_chunk_start;
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break;
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}
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goto invalid;
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case sw_last_chunk_extension:
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switch (ch) {
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case CR:
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state = sw_last_chunk_extension_almost_done;
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break;
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case LF:
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state = sw_trailer;
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}
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break;
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case sw_last_chunk_extension_almost_done:
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if (ch == LF) {
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state = sw_trailer;
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break;
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}
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goto invalid;
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||||
case sw_trailer:
|
||||
switch (ch) {
|
||||
case CR:
|
||||
state = sw_trailer_almost_done;
|
||||
break;
|
||||
case LF:
|
||||
goto done;
|
||||
default:
|
||||
state = sw_trailer_header;
|
||||
}
|
||||
break;
|
||||
|
||||
case sw_trailer_almost_done:
|
||||
if (ch == LF) {
|
||||
goto done;
|
||||
}
|
||||
goto invalid;
|
||||
|
||||
case sw_trailer_header:
|
||||
switch (ch) {
|
||||
case CR:
|
||||
state = sw_trailer_header_almost_done;
|
||||
break;
|
||||
case LF:
|
||||
state = sw_trailer;
|
||||
}
|
||||
break;
|
||||
|
||||
case sw_trailer_header_almost_done:
|
||||
if (ch == LF) {
|
||||
state = sw_trailer;
|
||||
break;
|
||||
}
|
||||
goto invalid;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
data:
|
||||
|
||||
ctx->state = state;
|
||||
buf->pos = pos;
|
||||
|
||||
switch (state) {
|
||||
|
||||
case sw_chunk_start:
|
||||
ctx->length = 3 /* "0" LF LF */;
|
||||
break;
|
||||
case sw_chunk_size:
|
||||
ctx->length = 2 /* LF LF */
|
||||
+ (ctx->size ? ctx->size + 4 /* LF "0" LF LF */ : 0);
|
||||
break;
|
||||
case sw_chunk_extension:
|
||||
case sw_chunk_extension_almost_done:
|
||||
ctx->length = 1 /* LF */ + ctx->size + 4 /* LF "0" LF LF */;
|
||||
break;
|
||||
case sw_chunk_data:
|
||||
ctx->length = ctx->size + 4 /* LF "0" LF LF */;
|
||||
break;
|
||||
case sw_after_data:
|
||||
case sw_after_data_almost_done:
|
||||
ctx->length = 4 /* LF "0" LF LF */;
|
||||
break;
|
||||
case sw_last_chunk_extension:
|
||||
case sw_last_chunk_extension_almost_done:
|
||||
ctx->length = 2 /* LF LF */;
|
||||
break;
|
||||
case sw_trailer:
|
||||
case sw_trailer_almost_done:
|
||||
ctx->length = 1 /* LF */;
|
||||
break;
|
||||
case sw_trailer_header:
|
||||
case sw_trailer_header_almost_done:
|
||||
ctx->length = 2 /* LF LF */;
|
||||
break;
|
||||
|
||||
}
|
||||
|
||||
return rc;
|
||||
|
||||
done:
|
||||
|
||||
return NGX_DONE;
|
||||
|
||||
invalid:
|
||||
|
||||
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
||||
"upstream sent invalid chunked response");
|
||||
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_proxy_chunked_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
|
||||
{
|
||||
ngx_int_t rc;
|
||||
ngx_buf_t *b, **prev;
|
||||
ngx_chain_t *cl;
|
||||
ngx_http_request_t *r;
|
||||
ngx_http_proxy_ctx_t *ctx;
|
||||
|
||||
if (buf->pos == buf->last) {
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
r = p->input_ctx;
|
||||
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
||||
|
||||
b = NULL;
|
||||
prev = &buf->shadow;
|
||||
|
||||
for ( ;; ) {
|
||||
|
||||
rc = ngx_http_proxy_parse_chunked(r, buf);
|
||||
|
||||
if (rc == NGX_OK) {
|
||||
|
||||
/* a chunk has been parsed successfully */
|
||||
|
||||
if (p->free) {
|
||||
cl = p->free;
|
||||
b = cl->buf;
|
||||
p->free = cl->next;
|
||||
ngx_free_chain(p->pool, cl);
|
||||
|
||||
} else {
|
||||
b = ngx_alloc_buf(p->pool);
|
||||
if (b == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
}
|
||||
|
||||
ngx_memzero(b, sizeof(ngx_buf_t));
|
||||
|
||||
b->pos = buf->pos;
|
||||
b->start = buf->start;
|
||||
b->end = buf->end;
|
||||
b->tag = p->tag;
|
||||
b->temporary = 1;
|
||||
b->recycled = 1;
|
||||
|
||||
*prev = b;
|
||||
prev = &b->shadow;
|
||||
|
||||
cl = ngx_alloc_chain_link(p->pool);
|
||||
if (cl == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
cl->buf = b;
|
||||
cl->next = NULL;
|
||||
|
||||
if (p->in) {
|
||||
*p->last_in = cl;
|
||||
} else {
|
||||
p->in = cl;
|
||||
}
|
||||
p->last_in = &cl->next;
|
||||
|
||||
/* STUB */ b->num = buf->num;
|
||||
|
||||
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
||||
"input buf #%d %p", b->num, b->pos);
|
||||
|
||||
if (buf->last - buf->pos >= ctx->size) {
|
||||
|
||||
buf->pos += ctx->size;
|
||||
b->last = buf->pos;
|
||||
ctx->size = 0;
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
ctx->size -= buf->last - buf->pos;
|
||||
buf->pos = buf->last;
|
||||
b->last = buf->last;
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
if (rc == NGX_DONE) {
|
||||
|
||||
/* a whole response has been parsed successfully */
|
||||
|
||||
p->upstream_done = 1;
|
||||
r->upstream->keepalive = !r->upstream->headers_in.connection_close;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if (rc == NGX_AGAIN) {
|
||||
|
||||
/* set p->length, minimal amount of data we want to see */
|
||||
|
||||
p->length = ctx->length;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
/* invalid response */
|
||||
|
||||
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
||||
"upstream sent invalid chunked response");
|
||||
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
||||
"http proxy chunked state %d, length %d",
|
||||
ctx->state, p->length);
|
||||
|
||||
if (b) {
|
||||
b->shadow = buf;
|
||||
b->last_shadow = 1;
|
||||
|
||||
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
||||
"input buf %p %z", b->pos, b->last - b->pos);
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
/* there is no data record in the buf, add it to free chain */
|
||||
|
||||
if (ngx_event_pipe_add_free_buf(p, buf) != NGX_OK) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_proxy_non_buffered_copy_filter(void *data, ssize_t bytes)
|
||||
{
|
||||
ngx_http_request_t *r = data;
|
||||
|
||||
ngx_buf_t *b;
|
||||
ngx_chain_t *cl, **ll;
|
||||
ngx_http_upstream_t *u;
|
||||
|
||||
u = r->upstream;
|
||||
|
||||
for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
||||
ll = &cl->next;
|
||||
}
|
||||
|
||||
cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
||||
if (cl == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
*ll = cl;
|
||||
|
||||
cl->buf->flush = 1;
|
||||
cl->buf->memory = 1;
|
||||
|
||||
b = &u->buffer;
|
||||
|
||||
cl->buf->pos = b->last;
|
||||
b->last += bytes;
|
||||
cl->buf->last = b->last;
|
||||
cl->buf->tag = u->output.tag;
|
||||
|
||||
if (u->length == -1) {
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
u->length -= bytes;
|
||||
|
||||
if (u->length == 0) {
|
||||
u->keepalive = !u->headers_in.connection_close;
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static ngx_int_t
|
||||
ngx_http_proxy_non_buffered_chunked_filter(void *data, ssize_t bytes)
|
||||
{
|
||||
ngx_http_request_t *r = data;
|
||||
|
||||
ngx_int_t rc;
|
||||
ngx_buf_t *b, *buf;
|
||||
ngx_chain_t *cl, **ll;
|
||||
ngx_http_upstream_t *u;
|
||||
ngx_http_proxy_ctx_t *ctx;
|
||||
|
||||
ctx = ngx_http_get_module_ctx(r, ngx_http_proxy_module);
|
||||
u = r->upstream;
|
||||
buf = &u->buffer;
|
||||
|
||||
buf->pos = buf->last;
|
||||
buf->last += bytes;
|
||||
|
||||
for (cl = u->out_bufs, ll = &u->out_bufs; cl; cl = cl->next) {
|
||||
ll = &cl->next;
|
||||
}
|
||||
|
||||
for ( ;; ) {
|
||||
|
||||
rc = ngx_http_proxy_parse_chunked(r, buf);
|
||||
|
||||
if (rc == NGX_OK) {
|
||||
|
||||
/* a chunk has been parsed successfully */
|
||||
|
||||
cl = ngx_chain_get_free_buf(r->pool, &u->free_bufs);
|
||||
if (cl == NULL) {
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
*ll = cl;
|
||||
ll = &cl->next;
|
||||
|
||||
b = cl->buf;
|
||||
|
||||
b->flush = 1;
|
||||
b->memory = 1;
|
||||
|
||||
b->pos = buf->pos;
|
||||
b->tag = u->output.tag;
|
||||
|
||||
if (buf->last - buf->pos >= ctx->size) {
|
||||
buf->pos += ctx->size;
|
||||
b->last = buf->pos;
|
||||
ctx->size = 0;
|
||||
|
||||
} else {
|
||||
ctx->size -= buf->last - buf->pos;
|
||||
buf->pos = buf->last;
|
||||
b->last = buf->last;
|
||||
}
|
||||
|
||||
ngx_log_debug2(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
||||
"http proxy out buf %p %z",
|
||||
b->pos, b->last - b->pos);
|
||||
|
||||
continue;
|
||||
}
|
||||
|
||||
if (rc == NGX_DONE) {
|
||||
|
||||
/* a whole response has been parsed successfully */
|
||||
|
||||
u->keepalive = !u->headers_in.connection_close;
|
||||
u->length = 0;
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
if (rc == NGX_AGAIN) {
|
||||
break;
|
||||
}
|
||||
|
||||
/* invalid response */
|
||||
|
||||
ngx_log_error(NGX_LOG_ALERT, r->connection->log, 0,
|
||||
"upstream sent invalid chunked response");
|
||||
|
||||
return NGX_ERROR;
|
||||
}
|
||||
|
||||
/* provide continuous buffer for subrequests in memory */
|
||||
|
||||
if (r->subrequest_in_memory) {
|
||||
|
||||
cl = u->out_bufs;
|
||||
|
||||
if (cl) {
|
||||
buf->pos = cl->buf->pos;
|
||||
}
|
||||
|
||||
buf->last = buf->pos;
|
||||
|
||||
for (cl = u->out_bufs; cl; cl = cl->next) {
|
||||
ngx_log_debug3(NGX_LOG_DEBUG_HTTP, r->connection->log, 0,
|
||||
"http proxy in memory %p-%p %uz",
|
||||
cl->buf->pos, cl->buf->last, ngx_buf_size(cl->buf));
|
||||
|
||||
if (buf->last == cl->buf->pos) {
|
||||
buf->last = cl->buf->last;
|
||||
continue;
|
||||
}
|
||||
|
||||
buf->last = ngx_movemem(buf->last, cl->buf->pos,
|
||||
cl->buf->last - cl->buf->pos);
|
||||
|
||||
cl->buf->pos = buf->last - (cl->buf->last - cl->buf->pos);
|
||||
cl->buf->last = buf->last;
|
||||
}
|
||||
}
|
||||
|
||||
return NGX_OK;
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
ngx_http_proxy_abort_request(ngx_http_request_t *r)
|
||||
{
|
||||
@ -1710,6 +2473,8 @@ ngx_http_proxy_create_loc_conf(ngx_conf_t *cf)
|
||||
conf->redirect = NGX_CONF_UNSET;
|
||||
conf->upstream.change_buffering = 1;
|
||||
|
||||
conf->http_version = NGX_CONF_UNSET_UINT;
|
||||
|
||||
conf->headers_hash_max_size = NGX_CONF_UNSET_UINT;
|
||||
conf->headers_hash_bucket_size = NGX_CONF_UNSET_UINT;
|
||||
|
||||
@ -2013,6 +2778,9 @@ ngx_http_proxy_merge_loc_conf(ngx_conf_t *cf, void *parent, void *child)
|
||||
}
|
||||
#endif
|
||||
|
||||
ngx_conf_merge_uint_value(conf->http_version, prev->http_version,
|
||||
NGX_HTTP_VERSION_10);
|
||||
|
||||
ngx_conf_merge_uint_value(conf->headers_hash_max_size,
|
||||
prev->headers_hash_max_size, 512);
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user