A program in C/C++/JAVA/Python for socket programming and share your file from one system to another

Practical 13

A program in C/C++/JAVA/Python for socket programming and share your file from one system to another

TCP SERVER AND CLIENT:

InterSystems IRIS supports two Internet Protocols (IP): TCP and UDP. These Internet Protocol allow InterSystems IRIS processes to communicate with processes on local or remote systems, whether or not those processes are running InterSystems IRIS.

TCP: the InterSystems IRIS Transmission Control Protocol (TCP) binding. Establishes a two-way connection between a server and a single client. Provides reliable byte stream transmission of data with error checking and correction, and message acknowledgement.
UDP: the InterSystems IRIS User Datagram Protocol (UDP) binding. Provides two-way message transfer between a server and a large number of clients. UDP is not connection-based; each transmission of data packets is an independent event. Provides fast and lightweight data transmission for local packet broadcasts and remote multicasting. Inherently less reliable than TCP. Does not provide message acknowledgement. For details, refer to the UDP Client/Server Communication chapter of this manual.

The “Client” in a TCP/IP connection is the computer or device that “dials the phone” and the “Server” is the computer that is “listening” for calls to come in. In other words, the Client needs to know the IP Address of whatever Server it wants to connect to and it also needs to know the port number that it wants to send and receive data through after a connection has been established. The Server only has to listen for connections and either accept them or reject them when they are initiated by a client.

Client-Side OPEN Command

OPEN "|TCP|4":("hal":4200::$CHAR(3,4)):10

: x:y means a specified range of characters from x through y in the ASCII sequence.

| x|y means specify either x or y.

[ ] Specify zero or one members of the specified set.

[ ]* Specify zero, one, or more members of the specified set.

{ } Specify exactly one member of the specified se

AIM: A program in C/C++/JAVA/Python for socket programming and share your file from one system to another.

:: Server Side ::

#include<WinSock2.h>

#include<iostream>

using namespace std;

int main()

{

cout<<"\t\t------ TCP SERVER ---------"<<endl;

cout<<endl;

WSADATA Winsockdata ;

int iWsaStartup , iWsaCleanup, iBind,iListen, iCloseSocket,iRecv,iSend;

SOCKET TCPServerSocket;

struct sockaddr_in TCPServerAdd;

struct sockaddr_in TCPClientAdd;

int iTCPClientAdd = sizeof(TCPClientAdd);

SOCKET sAcceptSocket;

char SenderBuffer[512] = "Hello from Server!";

int iSenderBuffer = strlen( SenderBuffer )+1;

char RecvBuffer[512];

int iRecvBuffer = strlen( RecvBuffer )+1;

// STEP -1 WSAStartUp Fun

iWsaStartup = WSAStartup(MAKEWORD(2,2),&Winsockdata);

if ( iWsaStartup!= 0 )

{

cout<<"WSAStartUp Failed"<<endl;

}

cout<<"WSAStartUp Success"<<endl;

// STEP-2 Fill the Structure

TCPServerAdd.sin_family = AF_INET;

TCPServerAdd.sin_addr.s_addr = inet_addr("127.0.0.1");

TCPServerAdd.sin_port = htons(8000);

//STEP -3 Socket Creation

TCPServerSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if (TCPServerSocket == INVALID_SOCKET)

{

cout<<"TCP Server Socket Creation Failed"<<endl;

cout<<"Error Code - "<<WSAGetLastError()<<endl;

}

cout<<"TCP Server Socket Creation Success"<<endl;

//STEP-4 bind fun

iBind = bind(

TCPServerSocket,

(SOCKADDR*)&TCPServerAdd,

sizeof(TCPServerAdd));

if (iBind == SOCKET_ERROR)

{

cout<<"Binding Failed"<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Binding Success"<<endl;

//STEP-5 Listen fun

iListen = listen(TCPServerSocket,2);

if (iListen == SOCKET_ERROR)

{

cout<<"Listen Fun Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Listen Fun Success"<<endl;

// STEP-6 Accept

sAcceptSocket = accept(TCPServerSocket,(SOCKADDR*)&TCPClientAdd,

&iTCPClientAdd);

if (sAcceptSocket == INVALID_SOCKET)

{

cout<<"Accept Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Connection Accepted"<<endl;

// STEP-7 Send Data to Client

iSend =send(sAcceptSocket,SenderBuffer,iSenderBuffer,0);

if (iSend == SOCKET_ERROR)

{

cout<<"Sending Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Data Sending Success "<<endl;

// STEP-8 Recv Data from Client

iRecv = recv(sAcceptSocket,RecvBuffer,iRecvBuffer,0);

if (iRecv == SOCKET_ERROR)

{

cout<<"Receive Data Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"DATA RECEIVED ->"<<RecvBuffer<<endl;

// STEP-9 Close Socket

iCloseSocket = closesocket(TCPServerSocket);

if (iCloseSocket == SOCKET_ERROR)

{

cout<<"Closing Socket Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Closing Socket Success"<<endl;

// STEP-10 CleanUp from DLL

iWsaCleanup = WSACleanup();

if (iWsaCleanup == SOCKET_ERROR)

{

cout<<"CleanUp Fun Failed "<<WSAGetLastError()<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"CleanUp Fun Success"<<endl;

system("PAUSE");

return 0;

}

:: Client Side ::

#include<WinSock2.h>

#include<iostream>

using namespace std;

int main()

{

cout<<"\t\t------ TCP CLIENT --------"<<endl;

cout<<endl;

//Local Variable

WSADATA WinSockData;

int iWsaStartup, iWsaCleanup, iSend, iCloseSocket, iConnect, iRecv;

SOCKET TCPClientSocket;

struct sockaddr_in TCPServerAdd;

char RecvBuffer[512];

int iRecvBuffer = strlen( RecvBuffer )+1;

char SenderBuffer[512] = "Hello from Client!";

int iSenderBuffer = strlen( SenderBuffer )+1;

//STEP-1 WSASatrtUp Fun

iWsaStartup = WSAStartup(MAKEWORD(2,2),&WinSockData);

if ( iWsaStartup!= 0 )

{

cout<<"WSAStartUp Failed"<<endl;

}

cout<<"WSAStartUp Success"<<endl;

// STEP-2 Socket Creation

TCPClientSocket = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);

if (TCPClientSocket == INVALID_SOCKET)

{

cout<<"TCP Client Socket Creation Failed"<<endl;

cout<<"Error Code - "<<WSAGetLastError()<<endl;

}

cout<<"TCP Client Socket Creation Success"<<endl;

// STEP-3 Fill Server Structure

TCPServerAdd.sin_family = AF_INET;

TCPServerAdd.sin_addr.s_addr = inet_addr("127.0.0.1");

TCPServerAdd.sin_port = htons(8000);

// STEP-4 Connect Fun

iConnect = connect(TCPClientSocket,(SOCKADDR*)&TCPServerAdd, sizeof(TCPServerAdd));

if (iConnect == SOCKET_ERROR)

{

cout<<"Connection Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Connection Success"<<endl;

// STEP-5 RECV Data From Server Side

iRecv = recv(TCPClientSocket,RecvBuffer,iRecvBuffer,0);

if (iRecv == SOCKET_ERROR)

{

cout<<"Receive Data Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"DATA RECEIVED ->"<<RecvBuffer<<endl;

// STEP-6 Send Data to Server

iSend = send(TCPClientSocket,SenderBuffer,iSenderBuffer,0);

if (iSend == SOCKET_ERROR)

{

cout<<"Sending Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Data Sending Success "<<endl;

// STEP-7 Close Socket Fun

iCloseSocket = closesocket(TCPClientSocket);

if (iCloseSocket == SOCKET_ERROR)

{

cout<<"Closing Socket Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"Closing Socket Success"<<endl;

// STEP-8 WSA CleanUp Fun;

iWsaCleanup = WSACleanup();

if (iWsaCleanup == SOCKET_ERROR)

{

cout<<"CleanUp Fun Failed "<<endl;

cout<<"Error No->"<<WSAGetLastError()<<endl;

}

cout<<"CleanUp Fun Success"<<endl;

system("PAUSE");

return 0;

}

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A program in C/C++/JAVA/Python for socket programming and share your file from one system to another