initial commit

src/server.cpp

@@ -0,0 +1,73 @@
+#include "server.hpp"
+#include <iostream>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string.h>
+
+Server::Server(const Config& config)
+    : address(config.get_address()), port(config.get_port()), sockfd(-1) {
+}
+
+Server::~Server() {
+    if (sockfd != -1) {
+        close(sockfd);
+    }
+}
+
+void Server::setup() {
+    sockfd = socket(AF_INET, SOCK_STREAM, 0);
+    if (sockfd == -1) {
+        throw std::runtime_error("Error creating socket");
+    }
+
+    int val = 1;
+    setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR, &val, sizeof(val));
+
+    sockaddr_in addr{};
+    addr.sin_family = AF_INET;
+    addr.sin_port = htons(port);
+
+    if (inet_pton(AF_INET, address.c_str(), &addr.sin_addr) != 1) {
+        throw std::runtime_error("Error parsing address: " + address);
+    }
+
+    if (bind(sockfd, (struct sockaddr *)&addr, sizeof(addr)) < 0) {
+        throw std::runtime_error("Error binding to " + address + ":" + std::to_string(port));
+    }
+
+    if (listen(sockfd, SOMAXCONN) < 0) {
+        throw std::runtime_error("Error listening for connections");
+    }
+
+    std::cout << "Server started on " << address << ":" << port << "\n";
+}
+
+void Server::handle_connection(int connectionfd) {
+    char rbuf[64] = {};
+    ssize_t n = read(connectionfd, rbuf, sizeof(rbuf) - 1);
+    if (n < 0) {
+        std::cerr << "Error reading client packet\n";
+        return;
+    }
+    std::cout << "Client says: " << std::string(rbuf, n) << "\n";
+    ssize_t written = write(connectionfd, "Hello, client!\n", 14);
+    if (written < 0) {
+        std::cerr << "Error writing to client\n";
+    }
+}
+
+void Server::run() {
+    setup();
+
+    while (true) {
+        struct sockaddr_in client_addr = {};
+        socklen_t addrlen = sizeof(client_addr);
+        int connectionfd = accept(sockfd, (struct sockaddr *)&client_addr, &addrlen);
+        if (connectionfd < 0) {
+            continue;
+        }
+        handle_connection(connectionfd);
+        close(connectionfd);
+    }
+}