1.axios responceが無いときのerror 処理
async function client_connect(client_host, supplier_uuid, client_uuid) { const url = `${client_host}/api/message/clientToConnect`; const params = { method : 'post', url : url, data : { supplier_uuid, client_uuid } }; let response; try { response = await axios(params); } catch(err) { if(err.responce) { response = { status : error.response.status, data : error.message } } else { response = { status : 500, data : null } } } return [ response.status, response.data ]; }