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executable file
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client.cpp
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executable file
·110 lines (85 loc) · 2.96 KB
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#include <iostream>
#include <cstring>
#include <unistd.h> // for "usleep"
#include <arpa/inet.h>
#include <sys/socket.h>
int client_receiver() {
// Create a socket
int clientSocket = socket(AF_INET, SOCK_STREAM, 0);
if (clientSocket == -1) {
std::cerr << "Failed to create socket." << std::endl;
return 1;
}
// Set up server address
sockaddr_in serverAddress{};
serverAddress.sin_family = AF_INET;
serverAddress.sin_port = htons(8080);
// Convert IP address from text to binary form
if (inet_pton(AF_INET, "127.0.0.1", &(serverAddress.sin_addr)) <= 0) {
std::cerr << "Failed to convert IP address." << std::endl;
return 1;
}
// Connect to the server
if (connect(clientSocket, (struct sockaddr *)&serverAddress, sizeof(serverAddress)) == -1) {
std::cerr << "Failed to connect to server." << std::endl;
return 1;
}
while (true) {
// Receive a message from the server
char buffer[1024];
memset(buffer, 0, sizeof(buffer));
ssize_t bytesRead = recv(clientSocket, buffer, sizeof(buffer) - 1, 0);
if (bytesRead == -1) {
std::cerr << "Failed to receive message from server." << std::endl;
return 1;
}
std::cout << "Received message from server: " << buffer << std::endl;
usleep(1 * 1000 * 1000);
}
// Close the socket
close(clientSocket);
return 0;
}
int client_sender() {
// TCP: SOCK_STREAM ; UDP: SOCK_DGRAM
// Create a socket
int clientSocket = socket(AF_INET, SOCK_DGRAM, 0);
if (clientSocket == -1) {
std::cerr << "Failed to create socket." << std::endl;
return 1;
}
// Set up server address
sockaddr_in serverAddress{};
serverAddress.sin_family = AF_INET;
serverAddress.sin_port = htons(8888);
// Convert IP address from text to binary form
if (inet_pton(AF_INET, "127.0.0.1", &(serverAddress.sin_addr)) <= 0) {
std::cerr << "Failed to convert IP address." << std::endl;
return 1;
}
// // Connect to the server (TCP only)
// if (connect(clientSocket, (struct sockaddr *)&serverAddress, sizeof(serverAddress)) == -1) {
// std::cerr << "Failed to connect to server." << std::endl;
// return 1;
// }
// // Send a message to the server (TCP)
// const char *message = "Hello, server!";
// if (send(clientSocket, message, strlen(message), 0) == -1) {
// std::cerr << "Failed to send message to server." << std::endl;
// }
// Send a message to the server (UDP)
uint8_t msg[] = {0xFF, 0xAA};
size_t length = sizeof(msg);
if (sendto(clientSocket, msg, length, 0, (struct sockaddr *)&serverAddress, sizeof(serverAddress)) == -1) {
std::cerr << "Failed to send message to server." << std::endl;
}
// Close the socket
close(clientSocket);
return 0;
}
int main()
{
// client_receiver();
client_sender();
return 0;
}