SSL: do not treat SSL handshake as request.

The request object will not be created until SSL handshake is complete.
This simplifies adding another connection handler that does not need
request object right after handshake (e.g., SPDY).

There are also a few more intentional effects:

 - the "client_header_buffer_size" directive will be taken from the
   server configuration that was negotiated by SNI;

 - SSL handshake errors and timeouts are not logged into access log
   as bad requests;

 - ngx_ssl_create_connection() is not called until the first byte of
   ClientHello message was received.  This also decreases memory
   consumption if plain HTTP request is sent to SSL socket.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/http/ngx_http_request.h b/src/http/ngx_http_request.h
index a2df0c6f2..c4b6422c4 100644
--- a/src/http/ngx_http_request.h
+++ b/src/http/ngx_http_request.h
@@ -303,7 +303,8 @@ typedef struct {
     ngx_buf_t                       **free;
     ngx_int_t                         nfree;
 
-    ngx_uint_t                        pipeline;    /* unsigned  pipeline:1; */
+    unsigned                          pipeline:1;
+    unsigned                          ssl:1;
 } ngx_http_connection_t;
 
 
@@ -492,7 +493,6 @@ struct ngx_http_request_s {
 #endif
 
     unsigned                          pipeline:1;
-    unsigned                          plain_http:1;
     unsigned                          chunked:1;
     unsigned                          header_only:1;
     unsigned                          keepalive:1;