Added $request_port and $is_request_port variables.

The $request_port variable contains the port passed by the client in the
request line (for HTTP/1.x) or ":authority" pseudo-header (for HTTP/2 and
HTTP/3).  If the request line contains no host, or ":authority" is missing,
then $request_port is taken from the "Host" header, similar to the $host
variable.

The $is_request_port variable contains ":" if $request_port is non-empty,
and is empty otherwise.

1 files changed, 14 insertions, 2 deletions

diff --git a/src/http/ngx_http_request.c b/src/http/ngx_http_request.c
index 16d79c490..7f2d04783 100644
--- a/src/http/ngx_http_request.c
+++ b/src/http/ngx_http_request.c
@@ -1846,8 +1846,9 @@ static ngx_int_t
 ngx_http_process_host(ngx_http_request_t *r, ngx_table_elt_t *h,
     ngx_uint_t offset)
 {
-    ngx_int_t  rc;
-    ngx_str_t  host;
+    u_char     *p;
+    ngx_int_t   rc;
+    ngx_str_t   host;
 
     if (r->headers_in.host) {
         ngx_log_error(NGX_LOG_INFO, r->connection->log, 0,
@@ -1888,6 +1889,17 @@ ngx_http_process_host(ngx_http_request_t *r, ngx_table_elt_t *h,
 
     r->headers_in.server = host;
 
+    p = ngx_strlchr(h->value.data + host.len,
+                    h->value.data + h->value.len, ':');
+
+    if (p) {
+        rc = ngx_atoi(p + 1, h->value.data + h->value.len - p - 1);
+
+        if (rc > 0 && rc < 65536) {
+            r->port = rc;
+        }
+    }
+
     return NGX_OK;
 }