fixed a fd leak on static file serving

plugins/cgi/cgi_plugin.c

@@ -101,7 +101,7 @@ int uwsgi_cgi_request(struct wsgi_request *wsgi_req) {
 		uwsgi_log("STARTBUF %.*s\n", 8, startbuf);
 
 		if (!memcmp(startbuf, "Status: ", 8)) {
-			wsgi_req->socket->proto_write(wsgi_req, "HTTP/1.1 "
+		//	wsgi_req->socket->proto_write(wsgi_req, "HTTP/1.1 "
 		}
 
 		// now wait for fd	

plugins/psgi/psgi_response.c

@@ -147,6 +147,7 @@ int psgi_response(struct wsgi_request *wsgi_req, AV *response) {
 				wsgi_req->sendfile_fd = SvIV(fn);
 				SvREFCNT_dec(fn);	
 				wsgi_req->response_size += uwsgi_sendfile(wsgi_req);
+				// no need to close here as perl GC will do the close()
 				return UWSGI_OK;
 			}
 			

plugins/python/uwsgi_python.h

@@ -212,8 +212,6 @@ PyObject *python_call(PyObject *, PyObject *, int, struct wsgi_request *);
 
 #ifdef UWSGI_SENDFILE
 PyObject *py_uwsgi_sendfile(PyObject *, PyObject *);
-ssize_t uwsgi_sendfile(struct wsgi_request *);
-ssize_t uwsgi_do_sendfile(int, int, size_t, size_t, off_t*, int);
 #endif
 
 PyObject *py_uwsgi_write(PyObject *, PyObject *);

plugins/rack/rack_plugin.c

@@ -616,6 +616,8 @@ int uwsgi_rack_request(struct wsgi_request *wsgi_req) {
 						wsgi_req->response_size += uwsgi_sendfile(wsgi_req);
 					}
 				}
+				// we need to close it...
+				close(wsgi_req->sendfile_fd);
 			}
 		}
 		else if (rb_respond_to( body, rb_intern("each") )) {

protocol.c

@@ -1610,6 +1610,8 @@ int uwsgi_file_serve(struct wsgi_request *wsgi_req, char *document_root, uint16_
                                 wsgi_req->header_cnt += 2;
                                 wsgi_req->sendfile_fd = open(real_filename, O_RDONLY);
                                 wsgi_req->response_size += uwsgi_sendfile(wsgi_req);
+				// here we need to close the sendfile fd (no-GC involved)
+				close(wsgi_req->sendfile_fd);
 			}