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- #include <sys/types.h>
- #include <sys/socket.h>
- #include <stdio.h>
- #include <netinet/in.h>
- #include <netinet/ip.h>
- #include <string.h>
- #include <unistd.h>
- #include <arpa/inet.h>
- #include <stdlib.h>
- int main(int argc, char* argvs[]) {
- int c,l;
- struct sockaddr_in server,server2;
- char ip[20];
- strcpy(ip,argvs[1]);
- int port = atoi(argvs[2]);
- //VERIFICARI-------------------
- if(port<1024 || port>65535){
- printf("Portul nu convine!\n");
- return 1;
- }
- char verif[]="0123456789.";
- int i=0;
- for(i=0;i<strlen(ip);i++){
- if(strchr(verif,ip[i])==0){
- printf("Ip-ul nu convine!\n");
- return 1; //eroare
- }
- }
- //VERIFICARI------------------
- c = socket(AF_INET, SOCK_DGRAM, 0);
- if (c < 0) {
- printf("Eroare la crearea socketului client\n");
- return 1;
- }
- memset(&server, 0, sizeof(server));
- server.sin_port = htons(port);
- server.sin_family = AF_INET;
- server.sin_addr.s_addr = inet_addr(ip);
- l = sizeof(server);
- char exit[] = "exit";
- while(1){
- char sir1[30],car1,sir2[30],car2;
- printf("Introduceti sirul:");
- fgets(sir1,sizeof(sir1),stdin);
- strcpy(sir1+strlen(sir1)-1,sir1+strlen(sir1));
- i = 0;
- for(i = 0; i <= strlen(sir1); i++){
- car1 = sir1[i];
- sendto(c, &car1, sizeof(car1), 0, (struct sockaddr *) &server, sizeof(server));
- }
- i = 0;
- while(1){
- recvfrom(c, &car2, sizeof(car2), MSG_WAITALL, (struct sockaddr *) &server, &l);
- sir2[i] = car2; i++;
- if(car2 == '\0') break;
- }
- printf("%s\n",sir2);
- if(strcmp(sir1,exit)==0 || strcmp(sir2,exit)==0) break;
- }
- close(c); return 0;
- }
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