go agent 需要通过版本等值组成的键查找服务是否存在：
version := "0.1"
if request.GetAttachment(mpro.MVersion) != "" {
version = request.GetAttachment(mpro.MVersion)
}
ck := getClusterKey(request.GetAttachment(mpro.MGroup), version, request.GetAttachment(mpro.MProxyProtocol), request.GetAttachment(mpro.MPath))
但是，我跟踪了下，通过php的doCall调用方法时，版本号根本就没有到agent这边来，是我用法错误吗？
go agent 需要通过版本等值组成的键查找服务是否存在：
version := "0.1"
if request.GetAttachment(mpro.MVersion) != "" {
version = request.GetAttachment(mpro.MVersion)
}
ck := getClusterKey(request.GetAttachment(mpro.MGroup), version, request.GetAttachment(mpro.MProxyProtocol), request.GetAttachment(mpro.MPath))
但是，我跟踪了下，通过php的doCall调用方法时，版本号根本就没有到agent这边来，是我用法错误吗？