1 files changed, 122 insertions, 0 deletions
diff --git a/src/http/ngx_http_upstream.h b/src/http/ngx_http_upstream.h
new file mode 100644
index 000000000..6614211a6
--- /dev/null
+++ b/src/http/ngx_http_upstream.h
@@ -0,0 +1,122 @@
+
+/*
+ * Copyright (C) Igor Sysoev
+ */
+
+
+#ifndef _NGX_HTTP_UPSTREAM_H_INCLUDED_
+#define _NGX_HTTP_UPSTREAM_H_INCLUDED_
+
+
+#include <ngx_config.h>
+#include <ngx_core.h>
+#include <ngx_event.h>
+#include <ngx_event_connect.h>
+#include <ngx_event_pipe.h>
+#include <ngx_http.h>
+
+
+#define NGX_HTTP_UPSTREAM_FT_ERROR           0x02
+#define NGX_HTTP_UPSTREAM_FT_TIMEOUT         0x04
+#define NGX_HTTP_UPSTREAM_FT_INVALID_HEADER  0x08
+#define NGX_HTTP_UPSTREAM_FT_HTTP_500        0x10
+#define NGX_HTTP_UPSTREAM_FT_HTTP_404        0x20
+#define NGX_HTTP_UPSTREAM_FT_BUSY_LOCK       0x40
+#define NGX_HTTP_UPSTREAM_FT_MAX_WAITING     0x80
+
+
+#define NGX_HTTP_UPSTREAM_INVALID_HEADER     40
+
+
+typedef struct {
+    time_t                      bl_time;
+    ngx_uint_t                  bl_state;
+
+    ngx_uint_t                  status;
+    time_t                      time;
+    
+    ngx_str_t                  *peer;
+} ngx_http_upstream_state_t;
+
+
+typedef struct {
+    ngx_msec_t                  connect_timeout;
+    ngx_msec_t                  send_timeout;
+    ngx_msec_t                  read_timeout;
+
+    size_t                      send_lowat;
+    size_t                      header_buffer_size;
+    size_t                      busy_buffers_size;
+    size_t                      max_temp_file_size;
+    size_t                      temp_file_write_size;
+
+    ngx_uint_t                  next_upstream;
+
+    ngx_bufs_t                  bufs;
+
+    ngx_flag_t                  x_powered_by;
+    ngx_flag_t                  cyclic_temp_file;
+
+    ngx_path_t                 *temp_path;
+} ngx_http_upstream_conf_t;
+
+
+typedef struct ngx_http_upstream_s  ngx_http_upstream_t;
+
+struct ngx_http_upstream_s {
+    ngx_http_request_t         *request;
+
+    ngx_peer_connection_t       peer;
+
+    ngx_event_pipe_t            pipe;
+
+    ngx_output_chain_ctx_t      output;
+    ngx_chain_writer_ctx_t      writer;
+
+    ngx_http_upstream_conf_t   *conf;
+
+    ngx_buf_t                   header_in;
+
+    ngx_int_t                 (*create_request)(ngx_http_request_t *r);
+    ngx_int_t                 (*reinit_request)(ngx_http_request_t *r);
+    ngx_int_t                 (*process_header)(ngx_http_request_t *r);
+    ngx_int_t                 (*send_header)(ngx_http_request_t *r);
+    void                      (*abort_request)(ngx_http_request_t *r);
+    void                      (*finalize_request)(ngx_http_request_t *r,
+                                                  ngx_int_t rc);
+    ngx_uint_t                  method;
+
+    ngx_str_t                   schema;
+    ngx_str_t                   uri;
+    ngx_str_t                  *location;
+
+    ngx_http_log_ctx_t         *log_ctx;
+    ngx_log_handler_pt          log_handler;
+    ngx_http_log_ctx_t         *saved_ctx;
+    ngx_log_handler_pt          saved_handler;
+
+    /* used to parse an upstream HTTP header */
+    ngx_uint_t                  status;
+    u_char                     *status_start;
+    u_char                     *status_end;
+    ngx_uint_t                  status_count;
+    ngx_uint_t                  parse_state;
+
+    ngx_http_upstream_state_t  *state;
+    ngx_array_t                 states;    /* of ngx_http_upstream_state_t */
+
+    unsigned                    cachable:1;
+
+    unsigned                    request_sent:1;
+    unsigned                    header_sent:1;
+};
+
+
+void ngx_http_upstream_init(ngx_http_request_t *r);
+u_char *ngx_http_upstream_log_error(void *data, u_char *buf, size_t len);
+
+
+extern char *ngx_http_upstream_header_errors[];
+
+
+#endif /* _NGX_HTTP_UPSTREAM_H_INCLUDED_ */