Save point for converion of colors

random/server.cpp

@@ -0,0 +1,68 @@
+#include <iostream>
+#include <fstream>
+#include <cstring>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+
+#define PORT 8080
+#define BUFFER_SIZE 1024
+
+// use this https://github.com/eminfedar/async-sockets-cpp/tree/master
+
+int main()
+{
+  int server_fd, new_socket;
+  struct sockaddr_in address;
+  int opt = 1;
+  int addrlen = sizeof(address);
+  char buffer[BUFFER_SIZE] = {0};
+  std::ofstream file("received_example.txt", std::ios::binary);
+
+  if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0)
+  {
+    std::cerr << "Socket failed" << std::endl;
+    return 1;
+  }
+
+  if (setsockopt(server_fd, SOL_SOCKET, SO_REUSEADDR | SO_REUSEPORT, &opt, sizeof(opt)))
+  {
+    std::cerr << "setsockopt" << std::endl;
+    return 1;
+  }
+
+  address.sin_family = AF_INET;
+  address.sin_addr.s_addr = INADDR_ANY;
+  address.sin_port = htons(PORT);
+
+  if (bind(server_fd, (struct sockaddr *)&address, sizeof(address)) < 0)
+  {
+    std::cerr << "Bind failed" << std::endl;
+    return 1;
+  }
+
+  if (listen(server_fd, 3) < 0)
+  {
+    std::cerr << "Listen failed" << std::endl;
+    return 1;
+  }
+
+  if ((new_socket = accept(server_fd, (struct sockaddr *)&address, (socklen_t *)&addrlen)) < 0)
+  {
+    std::cerr << "Accept failed" << std::endl;
+    return 1;
+  }
+
+  int valread;
+  while ((valread = recv(new_socket, buffer, BUFFER_SIZE, 0)) > 0)
+  {
+    file.write(buffer, valread);
+  }
+
+  std::cout << "File received successfully" << std::endl;
+
+  close(new_socket);
+  close(server_fd);
+  file.close();
+  return 0;
+}