Player1 = GameObject.FindGameObjectWithTag ("Player");
		collids = GameObject.FindGameObjectsWithTag ("collid");
		byte[] Buffer;
		string data = "player(" + Player1.transform.localPosition.x.ToString () + ", " +
			Player1.transform.localPosition.y.ToString () + ", " +
				Player1.transform.localPosition.z.ToString () + ")";
		Buffer = Encoding.ASCII.GetBytes(data);
		client1.GetStream ().Write (Buffer,0,Buffer.Length);
		client1.GetStream().Flush();
		Array.Clear (Buffer,0, Buffer.Length);	
		foreach (GameObject element in collids) {

			data =  " collid(" + element.transform.localPosition.x.ToString() + ", "
				+ element.transform.localPosition.y.ToString() + ", "
					+ element.transform.localPosition.z.ToString() + ")";	
			Buffer = Encoding.ASCII.GetBytes(data);
			client1.GetStream ().Write (Buffer,0,Buffer.Length);

			client1.GetStream().Flush();
			Array.Clear (Buffer,0, Buffer.Length);		
		}

#include <winsock2.h>
#include <stdio.h>
 
int main(void)
{
    WORD sockVer;
    WSADATA wsaData;
    int retVal;
 
    sockVer = MAKEWORD(2,2);
 
    WSAStartup(sockVer, &wsaData);
 
    //??????? ?????
    SOCKET servSock = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP);
 
    if(servSock == INVALID_SOCKET)
    {
        printf("Unable to create socket\n");
        WSACleanup();
        return SOCKET_ERROR;
    }
	SOCKADDR_IN sin;
    sin.sin_family = PF_INET;
    sin.sin_port = htons(90);
    sin.sin_addr.s_addr = INADDR_ANY;
    SOCKET clientSock;
 

    retVal = bind(servSock, (LPSOCKADDR)&sin, sizeof(sin));
    if(retVal == SOCKET_ERROR)
    {
        printf("Unable to bind\n");
        WSACleanup();
        return SOCKET_ERROR;
    }
 
    //???????? ?????? ??????? ?????
    retVal = listen(servSock, 10);
    if(retVal == SOCKET_ERROR)
    {
        printf("Unable to listen\n");
        WSACleanup();
        return SOCKET_ERROR;
    }
    //???? ???????
 clientSock = accept(servSock, NULL, NULL);
    
    if(clientSock == INVALID_SOCKET)
    {
        printf("Unable to accept\n");
        WSACleanup();
        return SOCKET_ERROR;
    }
 
    char szReq[1024]; 
 while(1){
    retVal = recv(clientSock, szReq, 1024, 0);
 
    if(retVal == SOCKET_ERROR)
    {
        printf("Unable to recv\n");
        return SOCKET_ERROR;
    }
 
    printf("Got the request from client\n%s\n",szReq);
 
    char *szResp = "Response";
 
    printf("Sending response from server\n");
    retVal = send(clientSock, szResp, strlen(szResp), 0);
 
    if(retVal == SOCKET_ERROR)
    {
        printf("Unable to send\n");
        return SOCKET_ERROR;
    }
}
    //????????? ?????
    closesocket(clientSock);
    closesocket(servSock);
 
    WSACleanup();
    
    system("PAUSE");
    return EXIT_SUCCESS;
}

..
		foreach (GameObject element in collids) {

			data =  " collid(" + element.transform.localPosition.x.ToString() + ", "
				+ element.transform.localPosition.y.ToString() + ", "
					+ element.transform.localPosition.z.ToString() + ")\n";	
			Buffer = Encoding.ASCII.GetBytes(data);
			client1.GetStream ().Write (Buffer,0,Buffer.Length);

			client1.GetStream().Flush();
			Array.Clear (Buffer,0, Buffer.Length);		
		}

public TcpClient client1;
...
try{
		client1 = new TcpClient ("127.0.0.1",90);
		}
		catch(SocketException ex){
			Debug.Log(ex);		
		}
data = "Hello \n";
		Buffer = Encoding.ASCII.GetBytes(data);
		client1.GetStream ().Write (Buffer,0,Buffer.Length);
		
		client1.GetStream().Flush();
		Array.Clear (Buffer,0, Buffer.Length);