TCP/IP Application Development

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==Examples==
==Examples==
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<code lang="c">
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#include <string.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdio.h>
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#define SERVERPORT 8888
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#define SERVERADDRESS "192.168.1.105"
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int main()
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{
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int servSock, bytes_sent, sin_size;
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char msg[10];
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struct sockaddr_in serverAddress; // server's address and port information
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struct hostent *host; //host information
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if ((servSock = socket(PF_INET, SOCK_STREAM, 0)) < 0)
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printf("socket() FAILED");
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serverAddress.sin_family = AF_INET;
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serverAddress.sin_port = htons(SERVERPORT);
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serverAddress.sin_addr.s_addr = inet_addr(SERVERADDRESS);
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memset(serverAddress.sin_zero, '\0', sizeof serverAddress.sin_zero);
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connect(servSock, (struct sockaddr *)&serverAddress, sizeof serverAddress);
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while(1)
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{
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scanf("%s", msg);
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send(servSock, msg, sizeof (msg), 0);
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if(strcmp(msg, "exit") == 0)
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break;
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}
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close(servSock);
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return 1;
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}
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</code>
==References==
==References==

Revision as of 02:30, 8 April 2008

Contents


Introduction

TCP/IP Applications are Applications based on the TCP/IP protocol suite. It is part of the Application Layer of the Layered Network Model also known as OSI.

Client/Server Model

Best Practices

Security Issues

Examples

  1. include <string.h>
  2. include <sys/types.h>
  3. include <sys/socket.h>
  4. include <netinet/in.h>
  5. include <arpa/inet.h>
  6. include <stdio.h>
  1. define SERVERPORT 8888
  2. define SERVERADDRESS "192.168.1.105"

int main() { int servSock, bytes_sent, sin_size;

char msg[10];

struct sockaddr_in serverAddress; // server's address and port information

struct hostent *host; //host information


if ((servSock = socket(PF_INET, SOCK_STREAM, 0)) < 0) printf("socket() FAILED");

serverAddress.sin_family = AF_INET; serverAddress.sin_port = htons(SERVERPORT); serverAddress.sin_addr.s_addr = inet_addr(SERVERADDRESS); memset(serverAddress.sin_zero, '\0', sizeof serverAddress.sin_zero);

connect(servSock, (struct sockaddr *)&serverAddress, sizeof serverAddress);

while(1) { scanf("%s", msg); send(servSock, msg, sizeof (msg), 0); if(strcmp(msg, "exit") == 0) break; } close(servSock);

return 1; }

References

See also

External links

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