first working prototype

source/client.cpp

@@ -17,7 +17,7 @@
 #include <switch.h>
 #endif
 #define PORT 8080
-#define BUFFER_SIZE 1024
+#define BUFFER_SIZE 65536
 #define MULTICAST_PORT 8081
 #define MULTICAST_GROUP "239.0.0.1" // Multicast group IP
 
@@ -37,11 +37,14 @@ struct ThreadArgs {
   fs::path directory;
 };
 
-bool receiveAck(int sock) {
-  char ack[4] = {0};
-  int bytes_received = read(sock, ack, 3);
-  std::cout << "receiveAck bytes_received: " << bytes_received << std::endl;
-  return bytes_received > 0 && std::string(ack) == "ACK";
+static bool send_all(int sock, const void* buf, size_t len) {
+  size_t sent = 0;
+  while (sent < len) {
+    ssize_t n = send(sock, static_cast<const char*>(buf) + sent, len - sent, 0);
+    if (n <= 0) return false;
+    sent += n;
+  }
+  return true;
 }
 
 // Отправка строки с учетом её длины
@@ -76,7 +79,7 @@ void sendFile(int sock, const fs::path &base_path, const fs::path &filepath) {
   // Get the size of the file
   std::streamsize file_size = infile.tellg();
   infile.seekg(0, std::ios::beg);
-  char buffer[BUFFER_SIZE];
+  char* buffer = new char[BUFFER_SIZE];
 
   std::cout << "send filesize: " << file_size << std::endl;
 
@@ -87,22 +90,18 @@ void sendFile(int sock, const fs::path &base_path, const fs::path &filepath) {
 
   while (file_size > 0) {
     infile.read(buffer, BUFFER_SIZE);
-    ssize_t bytes_sent = send(sock, buffer, infile.gcount(), 0);
-    if (bytes_sent == -1) {
+    std::streamsize count = infile.gcount();
+    if (!send_all(sock, buffer, count)) {
       std::cerr << "Failed to send file data" << std::endl;
+      delete[] buffer;
       pthread_exit(nullptr);
     }
-    file_size -= bytes_sent;
-
-    // Wait for acknowledgment after each chunk
-    if (!receiveAck(sock)) {
-      std::cerr << "Failed to receive acknowledgment" << std::endl;
-      pthread_exit(nullptr);
-    }
+    file_size -= count;
   }
 
   std::cout << "File sent successfully: " << filepath << std::endl;
 
+  delete[] buffer;
   infile.close();
 }