85 lines
No EOL
2.2 KiB
C++
85 lines
No EOL
2.2 KiB
C++
#include "client.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.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 <netdb.h>
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#include "net.h"
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int runClient(int argc, char* argv[])
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{
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int sockfd; // socket File descriptor
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int portno; // Port number
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int n = 0; // return value for read and write calls
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struct sockaddr_in serv_addr; // Server address
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struct hostent *server; // pointer to host information
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char buffer[1028]; // buffer for socked read
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memset(buffer,0,sizeof(buffer));
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// must provide information
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if (argc < 2)
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{
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fprintf(stderr,"usage %s hostname\n", argv[0]);
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exit(0);
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}
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// Get port number
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portno = 11715;
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// Create a new socket
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// AF_INET is general internetsocked domain
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// SOCK_STREAM as messages will be read in on this socket, SOCK_DGRAM would be for packets
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// 0 is for default protocol
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sockfd = socket(AF_INET, SOCK_STREAM, 0);
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if (sockfd < 0)
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error("ERROR opening socket");
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// Get the hostent information for the host by name
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server = gethostbyname(argv[1]);
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if (server == NULL)
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error("ERROR, no such host");
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// Empty the server address struct
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memset(&serv_addr,0, sizeof(serv_addr));
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// Set the server to AF_INET
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serv_addr.sin_family = AF_INET;
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// copy the server address into our server_addr struct
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memcpy(&serv_addr.sin_addr.s_addr, server->h_addr, server->h_length);
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// Set our server address port to the port number provided
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serv_addr.sin_port = htons(portno);
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// Attempt to connect to the server using the socket and server address info
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if (connect(sockfd, (const sockaddr*)&serv_addr, sizeof(serv_addr)) < 0)
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error("ERROR connecting");
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while ( n >= 0 )
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{
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// Get the message to send
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printf("Please enter the message: ");
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memset(buffer,0,sizeof(buffer));
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fgets(buffer,sizeof(buffer)-1,stdin);
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// Place a test message into the buffer
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strncpy(buffer,buffer,sizeof(buffer));
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// Write to the socket with the buffer
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n = write(sockfd,buffer,strlen(buffer));
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if (n < 0)
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error("ERROR writing to socket");
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}
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return 0;
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} |