output bugs

fix  bug: 
initialize ciphers... (null)
listening at (null):8388

src/server.c

@@ -1145,6 +1145,10 @@ int main(int argc, char **argv)
         exit(EXIT_FAILURE);
     }
 
+    if (method == 0) {
+        method = "table";
+    }
+    
     if (timeout == NULL) {
         timeout = "60";
     }
@@ -1219,7 +1223,7 @@ int main(int argc, char **argv)
             FATAL("listen() error");
         }
         setnonblocking(listenfd);
-        LOGI("listening at %s:%s", host, server_port);
+        LOGI("listening at %s:%s", host?host:"", server_port);
 
         struct listen_ctx *listen_ctx = &listen_ctx_list[index];