/* 更新新加入节点的前继的前继和后继的后继
* 通过向前继节点发出yourpre命令找出前继的前继，向后继节点发出yoursuc命令找出后继的后继
*/
void Join::init_suc_suc_pre_pre()
{
//后继的后继
string cmd = "yoursuc";
CSocket socket;
socket.Connect(peer->fingerTable.sucIP.c_str(),peer->fingerTable.sucPort);
socket.WriteLine(cmd);
string k = socket.ReadLine();
vector<string> s = Tool::Split(k," ");
peer->fingerTable.sucsucIP = s[0];
peer->fingerTable.sucsucPort = atoi(s[1].c_str());
peer->fingerTable.sucsucId = atoi(s[2].c_str());
socket.Close();
theApp.scout<<"@@@@@@@@@@@@@@@"<<endl;
//前继的前继
cmd = "yourpre";
socket.Connect(peer->fingerTable.preIP.c_str(),peer->fingerTable.prePort);
socket.WriteLine(cmd);
k = socket.ReadLine();
s = Tool::Split(k," ");
peer->fingerTable.prepreIP = s[0];
peer->fingerTable.preprePort = atoi(s[1].c_str());
peer->fingerTable.prepreId = atoi(s[2].c_str());
socket.Close();
}
/*根据ip和port来寻找pre*/
string Join::findPre(string ip, int port)
{
CSocket socket;
socket.Connect(ip.c_str(),port);//连接服务器
string cmd = "yourpre";
socket.WriteLine(cmd);
//读取查询结果
string result = socket.ReadLine();
theApp.scout<<result<<endl;
return result;
}
/*在要连接的节点的后继节点链表中，找出离新节点最近且是新节点的前继的节点*/
string Join::findClosestPrecedingFinger(int id, string remoteIp, int remotePort)
{
stringstream ss;
ss<<id;
string cmd = "closestprecedingfinger " + ss.str();
CSocket socket;
socket.Connect(remoteIp.c_str(),remotePort);
socket.WriteLine(cmd);
//读取查询结果
string result = socket.ReadLine();
theApp.scout<<result<<endl;
return result;
}
