initial commit

client.cpp

@@ -0,0 +1,73 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <iostream>
+#include <unistd.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <thread>
+
+using namespace std;
+
+void send_message(int sockfd, struct sockaddr_in addr) {
+	while (1) {
+		char buffer[1024];
+		bzero(buffer, 1024);
+		cin.getline(buffer, 1024);
+		sendto(sockfd, buffer, 1024, 0, (struct sockaddr*)&addr, sizeof(addr));
+	}
+}
+
+int main(int argc, char** argv) {
+
+	if (argc != 3) {
+		printf("Usage: %s ip port\n", argv[0]);
+		exit(0);
+	}
+	if (strlen(*argv) < 3) {
+		printf("Usage: %s ip port\n", argv[0]);
+		exit(0);
+	}
+
+	char* ip = argv[1];
+	int port = atoi(argv[2]);
+
+	int sockfd;
+	struct sockaddr_in addr;
+	char buffer[1024];
+	socklen_t addr_size;
+
+	sockfd = socket(AF_INET, SOCK_DGRAM, 0);
+	if (sockfd < 0) {
+		perror("[-] socket error");
+		exit(1);
+	}
+
+	memset(&addr, '\0', sizeof(addr));
+	addr.sin_family = AF_INET;
+	addr.sin_port = htons(port);
+	addr.sin_addr.s_addr = inet_addr(ip);
+
+	char username[50];
+	cout << "Enter tour username:" << endl;
+	bzero(username, 50);
+	cin.getline(username, 50);
+	sendto(sockfd, username, 50, 0, (struct sockaddr*)&addr, sizeof(addr));
+	cout << "Your username: " << username << endl;
+
+	thread t1(send_message, sockfd, addr);
+
+	while (1) {
+		bzero(buffer, 1024);
+		addr_size = sizeof(addr);
+		recvfrom(sockfd, buffer, 1024, 0, (struct sockaddr*)&addr, &addr_size);
+		cout << buffer << endl;
+	}
+    
+
+	t1.join();
+    return 0;
+
+}