From f2fcf11b25ead5b0c3c0f015a7203f2d30619396 Mon Sep 17 00:00:00 2001
From: Maxim Dounin <mdounin@mdounin.ru>
Date: Thu, 15 Sep 2011 19:22:35 +0000
Subject: [PATCH] Protocol version parsing in ngx_http_parse_status_line().

Once we know protocol version, set u->headers_in.connection_close to indicate
implicitly assumed connection close with HTTP before 1.1.
---
 src/http/modules/ngx_http_proxy_module.c | 5 +++++
 src/http/ngx_http.h                      | 1 +
 src/http/ngx_http_parse.c                | 5 +++++
 3 files changed, 11 insertions(+)

diff --git a/src/http/modules/ngx_http_proxy_module.c b/src/http/modules/ngx_http_proxy_module.c
index 902cfb8f2..0dfa16d17 100644
--- a/src/http/modules/ngx_http_proxy_module.c
+++ b/src/http/modules/ngx_http_proxy_module.c
@@ -1210,6 +1210,7 @@ ngx_http_proxy_process_status_line(ngx_http_request_t *r)
 
         r->http_version = NGX_HTTP_VERSION_9;
         u->state->status = NGX_HTTP_OK;
+        u->headers_in.connection_close = 1;
 
         return NGX_OK;
     }
@@ -1234,6 +1235,10 @@ ngx_http_proxy_process_status_line(ngx_http_request_t *r)
                    "http proxy status %ui \"%V\"",
                    u->headers_in.status_n, &u->headers_in.status_line);
 
+    if (ctx->status.http_version < NGX_HTTP_VERSION_11) {
+        u->headers_in.connection_close = 1;
+    }
+
     u->process_header = ngx_http_proxy_process_header;
 
     return ngx_http_proxy_process_header(r);
diff --git a/src/http/ngx_http.h b/src/http/ngx_http.h
index e3619e148..3c1a9d275 100644
--- a/src/http/ngx_http.h
+++ b/src/http/ngx_http.h
@@ -52,6 +52,7 @@ struct ngx_http_log_ctx_s {
 
 
 typedef struct {
+    ngx_uint_t           http_version;
     ngx_uint_t           code;
     ngx_uint_t           count;
     u_char              *start;
diff --git a/src/http/ngx_http_parse.c b/src/http/ngx_http_parse.c
index 949006b47..a7a4c6ee6 100644
--- a/src/http/ngx_http_parse.c
+++ b/src/http/ngx_http_parse.c
@@ -1403,6 +1403,7 @@ ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
                 return NGX_ERROR;
             }
 
+            r->http_major = ch - '0';
             state = sw_major_digit;
             break;
 
@@ -1417,6 +1418,7 @@ ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
                 return NGX_ERROR;
             }
 
+            r->http_major = r->http_major * 10 + ch - '0';
             break;
 
         /* the first digit of minor HTTP version */
@@ -1425,6 +1427,7 @@ ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
                 return NGX_ERROR;
             }
 
+            r->http_minor = ch - '0';
             state = sw_minor_digit;
             break;
 
@@ -1439,6 +1442,7 @@ ngx_http_parse_status_line(ngx_http_request_t *r, ngx_buf_t *b,
                 return NGX_ERROR;
             }
 
+            r->http_minor = r->http_minor * 10 + ch - '0';
             break;
 
         /* HTTP status code */
@@ -1516,6 +1520,7 @@ done:
         status->end = p;
     }
 
+    status->http_version = r->http_major * 1000 + r->http_minor;
     r->state = sw_start;
 
     return NGX_OK;