88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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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 <netdb.h>
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void error( const char *msg )
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{
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perror( msg );
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exit( 0 );
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}
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int main( int argc, char *argv[] )
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{
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int sockfd, portno;
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ssize_t n;
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struct sockaddr_in serv_addr;
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struct hostent *server;
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const size_t buffer_length = 256;
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char buffer[ buffer_length ];
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if( argc < 3 )
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{
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fprintf( stderr, "usage %s hostname port\n", argv[ 0 ] );
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exit( 0 );
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}
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portno = atoi( argv[ 2 ] );
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sockfd = socket( AF_INET, SOCK_STREAM, 0 );
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if( sockfd < 0 )
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{
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error("ERROR opening socket");
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}
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server = gethostbyname( argv[ 1 ] );
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if( server == NULL )
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{
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fprintf( stderr, "ERROR, no such host\n" );
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exit( 0 );
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}
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bzero( (char *)&serv_addr, sizeof( serv_addr ) );
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serv_addr.sin_family = AF_INET;
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bcopy( (char *)server->h_addr, (char *)&serv_addr.sin_addr.s_addr, (size_t)server->h_length );
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serv_addr.sin_port = htons(portno);
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if( connect( sockfd, (struct sockaddr *)&serv_addr, sizeof( serv_addr ) ) < 0 )
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{
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error("ERROR connecting");
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}
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FILE *fp;
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while(1)
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{
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fp = fopen("file.txt" , "r");
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if(fp == NULL) {
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perror("打开文件时发生错误");
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return(-1);
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}
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bzero( buffer, buffer_length );
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int i = 0;
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while (1)
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{
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if (fgets(buffer,buffer_length - 1, fp) == NULL) break;
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i++;
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char string[255];
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sprintf(string , "%s\n", buffer);
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printf("%3d: %s\n", i, string);
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n = write( sockfd, buffer, strlen( buffer ) );
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if( n < 0 )
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{
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error("ERROR writing to socket");
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}
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bzero( buffer, buffer_length );
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n = read( sockfd, buffer, buffer_length - 1 );
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if( n < 0 )
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{
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error( "ERROR reading from socket" );
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}
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sleep(1);
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}
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}
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close( sockfd );
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return 0;
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}
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