reuse array to store cert/pkey

Author: chronolaw

lib/resty/core/socket.lua

@@ -62,14 +62,19 @@ ngx_http_lua_ffi_ssl_free_session(void *sess);
 
 
 local output_value_buf = ffi_new("int[1]")
-local FFI_OK = base.FFI_OK
-local FFI_ERROR = base.FFI_ERROR
-local FFI_DONE = base.FFI_DONE
-local FFI_AGAIN = base.FFI_AGAIN
-local FFI_NO_REQ_CTX = base.FFI_NO_REQ_CTX
-local SOCKET_CTX_INDEX = 1
 local ERR_BUF_SIZE = 4096
 
+local FFI_OK         = base.FFI_OK
+local FFI_ERROR      = base.FFI_ERROR
+local FFI_DONE       = base.FFI_DONE
+local FFI_AGAIN      = base.FFI_AGAIN
+local FFI_NO_REQ_CTX = base.FFI_NO_REQ_CTX
+
+local SOCKET_CTX_INDEX          = 1
+local SOCKET_CLIENT_CERT_INDEX  = 6
+local SOCKET_CLIENT_PKEY_INDEX  = 7
+
+
 local function get_tcp_socket(cosocket)
     local tcp_socket = cosocket[SOCKET_CTX_INDEX]
     if not tcp_socket then
@@ -148,8 +153,8 @@ local openssl_error_code = ffi_new("int[1]")
 
 local function setclientcert(cosocket, cert, pkey)
     if not cert and not pkey then
-        cosocket.client_cert = nil
-        cosocket.client_pkey = nil
+        cosocket[SOCKET_CLIENT_CERT_INDEX] = nil
+        cosocket[SOCKET_CLIENT_PKEY_INDEX] = nil
         return true
     end
 
@@ -167,8 +172,8 @@ local function setclientcert(cosocket, cert, pkey)
         return nil, "bad client pkey type"
     end
 
-    cosocket.client_cert = cert
-    cosocket.client_pkey = pkey
+    cosocket[SOCKET_CLIENT_CERT_INDEX] = cert
+    cosocket[SOCKET_CLIENT_PKEY_INDEX] = pkey
 
     return true
 end
@@ -207,7 +212,9 @@ local function sslhandshake(cosocket, reused_session, server_name, ssl_verify,
                    server_name_str,
                    ssl_verify and 1 or 0,
                    send_status_req and 1 or 0,
-                   cosocket.client_cert, cosocket.client_pkey, errmsg)
+                   cosocket[SOCKET_CLIENT_CERT_INDEX],
+                   cosocket[SOCKET_CLIENT_PKEY_INDEX],
+                   errmsg)
 
     if rc == FFI_NO_REQ_CTX then
         error("no request ctx found", 2)