HelenOS sources

send_response     267 uspace/app/websrv/websrv.c 		rc = send_response(conn, msg_not_found);
send_response     274 uspace/app/websrv/websrv.c 	rc = send_response(conn, msg_ok);
send_response     317 uspace/app/websrv/websrv.c 		rc = send_response(conn, msg_not_implemented);
send_response     333 uspace/app/websrv/websrv.c 		rc = send_response(conn, msg_bad_request);
HelenOS homepage, sources at GitHub