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GammaClient.c
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GammaClient.c
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// compile: gcc GammaClient.c -o GammaClient
// usage : ./GammaClient port
// Course Description: This C code creates a client program that connects to a server via sockets.
// It reads and prints data received from the server at the specified IP address and port number.
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <arpa/inet.h>
int main(int argc, char *argv[])
{
int sockfd = 0, n = 0, portno;
char recvBuff[1025];
struct sockaddr_in serv_addr;
memset(recvBuff, '0', sizeof(recvBuff));
if ((sockfd = socket( AF_INET, SOCK_STREAM, 0)) < 0)
{
printf("socket error\n");
exit(EXIT_FAILURE);
}
serv_addr.sin_family = AF_INET;
portno = atoi(argv[1]);
serv_addr.sin_port = htons(portno);
serv_addr.sin_addr.s_addr = inet_addr("127.0.0.1");
if (connect(sockfd, (struct sockaddr*)&serv_addr, sizeof(serv_addr)) < 0)
{
printf("connect error\n");
exit(EXIT_FAILURE);
}
while ((n = read(sockfd, recvBuff, sizeof(recvBuff)-1)) > 0)
{
recvBuff[n] = 0;
if (fputs(recvBuff, stdout) == EOF)
{
printf("fputs error\n");
}
}
if (n < 0)
{
printf("read error\n");
}
return 0;
}