udp_server.c #include  #include  #include  #include  #define BUF_SIZE 30 void error_handling(char *message); int main(int argc, char *argv[]) { int serv_sock; char message[BUF_SIZE]; int str_len; socklen_t clnt_adr_sz; struct sockaddr_in serv_adr, clnt_adr; if(argc!=2){ printf("Usage : %s  ", argv[0]); exit(1); } serv_sock=socket(); if(serv_sock==-1) error_handling("UDP socket creation error"); memset(&serv_adr, 0, sizeof(serv_adr)); serv_adr.sin_family=AF_INET; serv_adr.sin_addr.s_addr=htonl(INADDR_ANY); serv_adr.sin_port=htons(atoi(argv[1])); if( bind() ==-1) error_handling("bind() error"); while(1) { clnt_adr_sz=sizeof(clnt_adr); str_len=recvfrom(); sendto(); } close(); return 0; } void error_handling(char *message) { fputs(message, stderr); fputc(' ', stderr); exit(1); } 

udp_client.c

#include  #include  #include  #include  #define BUF_SIZE 30 void error_handling(char *message); int main(int argc, char *argv[]) { int sock; char message[BUF_SIZE]; int str_len; socklen_t adr_sz; struct sockaddr_in serv_adr, from_adr; if(argc!=3){ printf("Usage : %s   ", argv[0]); exit(1); } sock=socket(); if(sock==-1) error_handling("socket() error"); memset(&serv_adr, 0, sizeof(serv_adr)); serv_adr.sin_family=AF_INET; serv_adr.sin_addr.s_addr=inet_addr(argv[1]); serv_adr.sin_port=htons(atoi(argv[2])); while(1) { fputs("Insert message(q to quit): ", stdout); fgets(message, sizeof(message), stdin); if(!strcmp(message,"q ") || !strcmp(message,"Q ")) break; sendto(); adr_sz=sizeof(from_adr); str_len=recvfrom(); message[str_len]=0; printf("Message from server: %s", message); } close(); return 0; } void error_handling(char *message) { fputs(message, stderr); fputc(' ', stderr); exit(1); } 

Please show me the output too thanks.

Skeleton of UDP Study the following files and use them to compile and test tcp and udp communication. udp_server.c udp_client.c 1. Analysis the following functions. Describe syntax, arguments and return values of them. socket, bind, htons, htonl, recvfrom, sendto, close 2. What is Loopback IP address? 3. Debug and complete the above codes. 4. Compile them and try UDP communication with the loop IP address. - SOC