Participant test succeeds

Messages.cpp

@@ -41,7 +41,7 @@ unsigned char ClientMsg::Serialize(char *buffer) {
   unsigned char ix = 0;
   buffer[ix++] = this->id;
   buffer[ix++] = this->networkId;
-  return ix;
+  return ClientMsg::length;
 }
 
 // bool ClientMsg::Send(Participant *participant, unsigned char networkId) {

Messages.h

@@ -27,6 +27,7 @@ public:
 class ClientMsg : public IMessage {
 public:
   static const unsigned char id = 0xA0;
+  static const unsigned char length = 2;
   unsigned char networkId;
 
   ClientMsg(char networkId);

Participant.cpp

@@ -4,6 +4,7 @@
 
 #if defined(_WIN32) || defined(_WIN64)
 #include <winsock2.h>
+#include <ws2tcpip.h>
 #pragma comment(lib, "ws2_32.lib")
 #elif defined(__unix__) || defined(__APPLE__)
 #include <arpa/inet.h>
@@ -13,7 +14,6 @@
 #endif
 
 Passer::Control::Participant::Participant(const char *ipAddress, int port) {
-  sockaddr_in server_addr;
 
   // Create a UDP socket
 #if defined(_WIN32) || defined(_WIN64)
@@ -28,40 +28,39 @@ Passer::Control::Participant::Participant(const char *ipAddress, int port) {
 #if defined(_WIN32) || defined(_WIN64)
   this->sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 #elif defined(__unix__) || defined(__APPLE__)
-  sock = socket(AF_INET, SOCK_DGRAM, 0);
+  this->sock = socket(AF_INET, SOCK_DGRAM, 0);
 #endif
 
-  if (sock < 0) {
+  if (this->sock < 0) {
     std::cerr << "Error creating socket" << std::endl;
     return;
   }
 
   // Set up the server address
-  // memset(&server_addr, 0, sizeof(server_addr));
-  // server_addr.sin_family = AF_INET;
-  // server_addr.sin_port = htons(PORT);
-  // server_addr.sin_addr.s_addr = INADDR_ANY;
-  // Set up the server address structure
   memset(&server_addr, 0, sizeof(server_addr));
   server_addr.sin_family = AF_INET;
-  server_addr.sin_port = htons(port); // Port to send the packet to
-  server_addr.sin_addr.s_addr =
-      inet_addr(ipAddress); // Destination IP address (localhost)
-
-  // Bind the socket
-  if (bind(sock, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
-    std::cerr << "Error binding socket" << std::endl;
+  server_addr.sin_port = htons((u_short)port); // Port to send the packet to
+  if (inet_pton(AF_INET, "255.255.255.255", &server_addr.sin_addr) <= 0) {
+    std::cerr << "Invalid address" << std::endl;
+    closesocket(sock);
+    WSACleanup();
     return;
   }
 
-  // std::cout << "Server is listening on port " << PORT << "..." << std::endl;
+  BOOL broadcast = TRUE;
+  if (setsockopt(sock, SOL_SOCKET, SO_BROADCAST, (char *)&broadcast,
+                 sizeof(broadcast)) == SOCKET_ERROR) {
+    std::cerr << "Setting socket option for broadcast failed" << std::endl;
+  }
 }
 
 void Participant::Update(unsigned long currentTimeMs) {
   // std::cout << "update\n";
   if (currentTimeMs > this->nextPublishMe) {
-    std::cout << "publish\n";
-    this->Publish(ClientMsg(this->networkId));
+    ClientMsg msg = ClientMsg(this->networkId);
+    this->Publish(msg);
+    // Console.WriteLine($"{this.name} Sent ClientMsg {this.networkId}");
+    std::cout << this->name << " sent ClientMsg\n";
     this->nextPublishMe = currentTimeMs + this->publishInterval;
   }
 }
@@ -70,17 +69,26 @@ bool Participant::SendBuffer(unsigned char bufferSize) { return false; }
 
 bool Participant::PublishBuffer(unsigned char bufferSize) { return false; }
 
-bool Participant::Publish(IMessage msg) {
+#include <ws2tcpip.h>
+
+bool Participant::Publish(
+    ClientMsg msg) { // I want to use IMessage here, but then the serialize
+                     // calls the IMessage.Serialize...
   // Send the message to the specified address and port
   int bufferSize = msg.Serialize(this->buffer);
+  std::cout << "buffer size " << bufferSize << "\n";
   if (bufferSize <= 0)
     return true;
 
-  std::cout << "Publish to " << "\n";
+  // char ip_str[INET_ADDRSTRLEN];
+  // inet_ntop(AF_INET, &(server_addr.sin_addr), ip_str, INET_ADDRSTRLEN);
+  // std::cout << "Publish to " << ip_str << ":" << ntohs(server_addr.sin_port)
+  //           << "\n";
   int sent_bytes = sendto(sock, this->buffer, bufferSize, 0,
                           (struct sockaddr *)&server_addr, sizeof(server_addr));
   if (sent_bytes == SOCKET_ERROR) {
-    std::cerr << "Error sending message" << std::endl;
+    int error_code = WSAGetLastError(); // Get the error code on Windows
+    std::cerr << "sendto failed with error: " << error_code << std::endl;
     closesocket(sock);
     WSACleanup();
     return false;

Participant.h

@@ -15,6 +15,7 @@ public:
   char buffer[1024];
   long publishInterval = 3000; // 3 seconds
   unsigned char networkId = 0;
+  const char *name = "Participant";
 
   SOCKET sock;
   sockaddr_in server_addr;
@@ -26,12 +27,12 @@ public:
   virtual bool SendBuffer(unsigned char bufferSize);
   virtual bool PublishBuffer(unsigned char bufferSize);
 
-  bool Publish(IMessage msg);
+  bool Publish(ClientMsg msg);
 
   void ReceiveData(unsigned char bufferSize);
 
 protected:
-  long nextPublishMe = 0;
+  unsigned long nextPublishMe = 0;
 
   virtual void ProcessNetworkIdMsg(NetworkIdMsg msg);
   virtual void ProcessInvestigateMsg(InvestigateMsg msg);

test/thing_test.cc

@@ -5,6 +5,7 @@
 #include <gtest/gtest.h>
 
 #include <chrono>
+#include <ws2tcpip.h>
 
 #include "Participant.h"
 #include "Thing.h"
@@ -32,8 +33,55 @@ protected:
   }
 };
 
+void send_udp_message(const char *message, const char *ip, int port) {
+  WSADATA wsaData;
+  SOCKET sock;
+  struct sockaddr_in server_addr;
+
+  // Initialize Winsock
+  if (WSAStartup(MAKEWORD(2, 2), &wsaData) != 0) {
+    std::cerr << "WSAStartup failed" << std::endl;
+    return;
+  }
+
+  // Create a UDP socket
+  sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
+  if (sock == INVALID_SOCKET) {
+    std::cerr << "Socket creation failed" << std::endl;
+    WSACleanup();
+    return;
+  }
+
+  // Set up the sockaddr_in structure for the destination
+  memset(&server_addr, 0, sizeof(server_addr));
+  server_addr.sin_family = AF_INET;
+  server_addr.sin_port = htons((u_short)port);
+
+  // Convert the IP address
+  if (inet_pton(AF_INET, ip, &server_addr.sin_addr) <= 0) {
+    std::cerr << "Invalid address" << std::endl;
+    closesocket(sock);
+    WSACleanup();
+    return;
+  }
+
+  // Send the UDP message
+  int sent_bytes = sendto(sock, message, strlen(message), 0,
+                          (struct sockaddr *)&server_addr, sizeof(server_addr));
+  if (sent_bytes == SOCKET_ERROR) {
+    std::cerr << "sendto failed with error: " << WSAGetLastError() << std::endl;
+  } else {
+    std::cout << "Message sent successfully!" << std::endl;
+  }
+
+  // Close the socket and clean up Winsock
+  closesocket(sock);
+  WSACleanup();
+}
+
 TEST_F(ControlCoreSuite, Dummytest) {
-  // Participant participant = Participant("127.0.0.1", 7681);
+
+  send_udp_message("Hello, UDP!", "127.0.0.1", 8080); // Send to localhost
   ASSERT_EQ(1, 1);
 }
 
@@ -42,7 +90,7 @@ TEST_F(ControlCoreSuite, Participant) {
 
   unsigned long milliseconds = get_time_ms();
   unsigned long startTime = milliseconds;
-  while (milliseconds < startTime + 7000) {
+  while (milliseconds < startTime + 1000) {
     participant.Update(milliseconds);
 
     milliseconds = get_time_ms();