现在我用sip去处理GB28181协议，当我使用sip中的send时，如下代码

sip.send({ method: ‘MESSAGE’, content: xmlContent, uri: ‘sip:34020000001320000011@192.168.10.112:5061’, headers: { to: { uri: ‘sip:34020000001320000011@3402000000’ }, from: { uri: ‘sip:34020000002000000001@3402000000’, params: { tag: getRandomString() } }, cseq: { method: ‘MESSAGE’, seq: getRandom() }, ‘content-type’: ‘Application/MANSCDP+xml’, ‘Call-ID’: getRandomString() } }, function (rs) { console.log(rs); });

我在网络监控发现，调用一次sip send消息，竟然在网络监控发现它连续发送了5次，难道中send没有收到返回消息，会继续发送吗？请指教