public override RemoteConnection ConnectToServer(RemoteServerInfo serverInfo)
{
try
{
var channel = new Grpc.Core.Channel(
serverInfo.ServerIp,
serverInfo.ServerPort,
Grpc.Core.ChannelCredentials.Insecure,
/* keep config and naming using diff channel */
new List <Grpc.Core.ChannelOption> {
new Grpc.Core.ChannelOption(GetName(), 1)
});
// after nacos alpha2 server check response was changed!!
var response = ServerCheck(channel);
if (response == null || response is not ServerCheckResponse scResp)
{
ShuntDownChannel(channel);
return(null);
}
var streamClient = new Nacos.BiRequestStream.BiRequestStreamClient(channel);
var requestClient = new Nacos.Request.RequestClient(channel);
GrpcConnection grpcConn = new GrpcConnection(serverInfo);
grpcConn.SetConnectionId(scResp.ConnectionId);
var streamCall = BindRequestStream(streamClient, grpcConn);
// stream observer to send response to server
grpcConn.SetBiRequestStreamClient(streamCall);
grpcConn.SetRequestClient(requestClient);
grpcConn.SetChannel(channel);
// after nacos alpha2 setup request was changed!!
ConnectionSetupRequest conSetupRequest = new ConnectionSetupRequest
{
ClientVersion = Constants.CLIENT_VERSION,
Labels = labels,
Abilities = clientAbilities,
ClientIp = Utils.NetUtils.LocalIP(),
Tenant = GetTenant()
};
grpcConn.SendRequest(conSetupRequest, BuildMeta(conSetupRequest.GetRemoteType()));
return(grpcConn);
}
catch (Exception ex)
{
logger?.LogError(ex, "[{0}]Fail to connect to server!", this.GetName());
return(null);
}
}
private CommonResponse ServerCheck(Grpc.Core.ChannelBase channel)
{
try
{
var payload = GrpcUtils.Convert <object>(new { }, new RequestMeta {
Type = RemoteRequestType.Req_ServerCheck
});
var client = new Nacos.Request.RequestClient(channel);
var resp = client.request(payload);
var res = GrpcUtils.Parse(resp);
return((CommonResponse)res);
}
catch (Exception ex)
{
logger?.LogError(ex, "[{0}]Fail to server check!", GetName());
return(null);
}
}
public void SetRequestClient(Nacos.Request.RequestClient client) => this.reqClient = client;