/* ** client.c -- a stream socket client demo */ #include #include #include #include #include #include #include #include #include #define PORT 5842 // the port client will be connecting to #define MAXDATASIZE 100 // max number of bytes we can get at once int main(int argc, char *argv[]) { int sockfd, numbytes; //char buf[MAXDATASIZE]; //unsigned int buf[MAXDATASIZE]; struct hostent *he; struct sockaddr_in their_addr; // connector's address information if (argc != 2) { fprintf(stderr,"usage: client hostname\n"); exit(1); } if ((he=gethostbyname(argv[1])) == NULL) { // get the host info herror("gethostbyname"); exit(1); } if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) { perror("socket"); exit(1); } their_addr.sin_family = AF_INET; // host byte order their_addr.sin_port = htons(PORT); // short, network byte order their_addr.sin_addr = *((struct in_addr *)he->h_addr); memset(their_addr.sin_zero, '\0', sizeof their_addr.sin_zero); if (connect(sockfd, (struct sockaddr *)&their_addr, sizeof their_addr) == -1) { perror("connect"); exit(1); } // if ((numbytes=recv(sockfd, buf, MAXDATASIZE-1, MSG_WAITALL)) == -1) { unsigned int bufui[MAXDATASIZE], bufsentlen=0; int bytes_sent, i, bufsent=0; int recvint[16]; if ((numbytes=recv(sockfd, &recvint, 16, MSG_WAITALL)) == -1) { perror("recv"); exit(1); } for(i=0;i<4;i++){ printf("recvint : %u\n",recvint[i]); } //printf("bufsent: %d\n",bufsent); /* bufsentlen=sizeof bufsent; printf("buf len: %u\n",bufsentlen); //printf("Received: %s\n",buf); if ((bytes_sent = send(sockfd, &bufsent, bufsentlen, MSG_WAITALL)) == -1) { perror("send"); exit(1); } if ((numbytes=recv(sockfd, buf, MAXDATASIZE-1,MSG_WAITALL)) == -1) { perror("recv"); exit(1); } printf("numbytes: %d\n",numbytes); buf[numbytes] = '\0'; printf("Received: %s\n",buf); */ printf("\n"); close(sockfd); return 0; }