// Run like this: simple_client address port // Results in argv ["./simple_client", "address", "port"] #include #include #include #include #include #include #include #include int main(int args, char ** argv){ struct sockaddr_in sad; sad.sin_port = htons(atoi(argv[2])); sad.sin_family = AF_INET; int skt = socket(AF_INET, SOCK_STREAM, 0); struct hostent* entry = gethostbyname(argv[1]); if(!entry){ if(h_errno == HOST_NOT_FOUND){ printf("This is our own message that says the host wasn't found\n"); } herror("gethostbyname"); return 1; } struct in_addr **addr_list = (struct in_addr**)entry->h_addr_list; struct in_addr* c_addr = addr_list[0]; char* ip_string = inet_ntoa(*c_addr); sad.sin_addr = *c_addr; printf("Connecting to: %s\n", ip_string); if( connect(skt, (struct sockaddr*)&sad, sizeof(struct sockaddr_in)) ){ perror("connect"); return 1; } unsigned char type; type = 1; write(skt, &type, 1); int squirrel_report = 8; write(skt, &squirrel_report, sizeof(int)); read(skt, &type, 1); printf("Received a type %d\n", type); type = 2; write(skt, &type, 1); int squirrel_count; read(skt, &type, 1); printf("Received a type %d\n", type); read(skt, &squirrel_count, sizeof(int)); printf("Total count: %d squirrels\n", squirrel_count); close(skt); return 0; }