Partially finished client

src/CMakeLists.txt

@@ -24,6 +24,7 @@ target_sources(${DUSK_TARGET_NAME}
 
 # Subdirs
 add_subdirectory(assert)
+add_subdirectory(client)
 add_subdirectory(console)
 add_subdirectory(error)
 add_subdirectory(server)

src/client/CMakeLists.txt

@@ -10,3 +10,4 @@ target_sources(${DUSK_TARGET_NAME}
 )
 
 # Subdirs
+add_subdirectory(networked)

src/client/client.c

@@ -0,0 +1,82 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "client.h"
+#include "assert/assert.h"
+#include "util/memory.h"
+#include "console/console.h"
+#include "server/server.h"
+
+client_t CLIENT;
+
+void cmdJoin(const consolecmdexec_t *exec) {
+  clientconnect_t connect;
+
+  if(exec->argc > 0) {
+    connect.type = CLIENT_TYPE_NETWORKED;
+    connect.networked.port = SERVER_DEFAULT_PORT;
+  } else {
+    connect.type = CLIENT_TYPE_SINGLE_PLAYER;
+  }
+
+  errorret_t ret = clientConnect(connect);
+  if(ret == ERROR_OK) {
+    consolePrint("Connected to server");
+  } else {
+    consolePrint("Failed to connect to server: %s", errorString());
+  }
+  errorFlush();
+}
+
+void cmdLeave(const consolecmdexec_t *exec) {
+  clientDisconnect();
+}
+
+void clientInit() {
+  memoryZero(&CLIENT, sizeof(client_t));
+
+  consoleRegCmd("join", cmdJoin);
+  consoleRegCmd("leave", cmdLeave);
+}
+
+errorret_t clientConnect(const clientconnect_t connect) {
+  errorret_t ret;
+  if(CLIENT.state != CLIENT_STATE_DISCONNECTED) {
+    return error("Client is already connected");
+  }
+
+  CLIENT.type = connect.type;
+
+  switch(connect.type) {
+    case CLIENT_TYPE_NETWORKED:
+      ret = networkedClientConnect(&CLIENT, connect.networked);
+      break;
+
+    default:
+      assertUnreachable("Invalid client type");
+  }
+
+  if(ret != ERROR_OK) CLIENT.state = CLIENT_STATE_DISCONNECTED;
+  return ret;
+}
+
+void clientDisconnect() {
+  if(CLIENT.state == CLIENT_STATE_DISCONNECTED) return;
+
+  switch(CLIENT.type) {
+    case CLIENT_TYPE_NETWORKED:
+      networkedClientDisconnect(&CLIENT);
+      break;
+
+    default:
+      assertUnreachable("Invalid client type");
+  }
+}
+
+void clientDispose() {
+  clientDisconnect();
+}

src/client/client.h

@@ -6,3 +6,59 @@
  */
 
 #pragma once
+#include "client/networked/networkedclient.h"
+
+typedef enum {
+  CLIENT_TYPE_NETWORKED,
+  CLIENT_TYPE_SINGLE_PLAYER,
+} clienttype_t;
+
+typedef enum {
+  CLIENT_STATE_DISCONNECTED,
+  CLIENT_STATE_CONNECTING,
+  CLIENT_STATE_CONNECTED,
+  CLIENT_STATE_DISCONNECTING,
+} clientstate_t;
+
+typedef struct clientconnect_s {
+  clienttype_t type;
+  union {
+    networkedclientconnect_t networked;
+  };
+} clientconnect_t;
+
+typedef struct client_s {
+  clientstate_t state;
+  clienttype_t type;
+
+  union {
+    networkedclient_t networked;
+  };
+} client_t;
+
+extern client_t CLIENT;
+
+/**
+ * Initializes the client.
+ * 
+ * @return Error code indicating success or failure.
+ */
+void clientInit();
+
+/**
+ * Connects to a server.
+ * 
+ * @param connect Connection information.
+ * @return Error code indicating success or failure.
+ */
+errorret_t clientConnect(const clientconnect_t connect);
+
+/**
+ * Disconnects the client from the server.
+ */
+void clientDisconnect();
+
+/**
+ * Cleans up the client resources.
+ */
+void clientDispose();

src/client/networked/CMakeLists.txt

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Dominic Masters
+# 
+# This software is released under the MIT License.
+# https://opensource.org/licenses/MIT
+
+# Sources
+target_sources(${DUSK_TARGET_NAME}
+  PRIVATE
+    networkedclient.c
+)

src/client/networked/networkedclient.c

@@ -0,0 +1,261 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#include "client/client.h"
+#include "assert/assert.h"
+#include "console/console.h"
+
+errorret_t networkedClientConnect(
+  client_t *client,
+  const networkedclientconnect_t connInfo
+) {
+  int32_t ret;
+  packet_t packet;
+  errorret_t err;
+  char_t *ip = "127.0.0.1";
+
+
+  assertNotNull(client, "Client is NULL");
+  assertTrue(client->type == CLIENT_TYPE_NETWORKED, "Client is not networked");
+  assertIsMainThread("Client connect must be on main thread");
+
+  client->state = CLIENT_STATE_CONNECTING;
+  consolePrint("Connecting to server %s:%d", ip, connInfo.port);
+
+  // Create a socket
+  client->networked.socket = socket(AF_INET, SOCK_STREAM, 0);
+  if(client->networked.socket < 0) {
+    return error("Failed to create socket %s", strerror(errno));
+  }
+
+  // Set ip address and port
+  client->networked.address.sin_family = AF_INET;
+  client->networked.address.sin_port = htons(connInfo.port);
+  client->networked.address.sin_addr.s_addr = inet_addr(ip);
+
+  ret = inet_pton(AF_INET, ip, &client->networked.address.sin_addr);
+  if(ret <= 0) {
+    close(client->networked.socket);
+    return error("Invalid or bad IP address %s: %s", ip, strerror(errno));
+  }
+
+  // Connect to the server
+  ret = connect(
+    client->networked.socket,
+    (struct sockaddr *)&client->networked.address,
+    sizeof(client->networked.address)
+  );
+  if(ret < 0) {
+    close(client->networked.socket);
+    switch(errno) {
+      case ECONNREFUSED:
+        return error("Failed to connect: Connection refused");
+      case ETIMEDOUT:
+        return error("Failed to connect: Connection timed out");
+      case ENETUNREACH:
+        return error("Failed to connect: Network unreachable");
+      default:
+        return error("Failed to connect: Unknown error");
+    }
+  }
+
+  // Send the version
+  {
+    const char_t *message = "DUSK|"DUSK_VERSION;
+    ssize_t sent = send(
+      client->networked.socket,
+      message,
+      strlen(message),
+      0
+    );
+  }
+
+  // We should now receive a welcome packet
+  err = networkedClientReadPacket(client, &packet);
+  if(err) return err;
+  switch(packet.type) {
+    case PACKET_TYPE_DISCONNECT:
+      err = packetDisconnectClient(&packet);
+      if(err) return err;
+      break;
+    
+    case PACKET_TYPE_WELCOME:
+      err = packetWelcomeClient(&packet);
+      if(err) return err;
+      break;
+    
+    default:
+      return error("Server did not send welcome message.");
+  }
+
+  // Connection was established, hand off to thread
+  ret = pthread_create(
+    &client->networked.thread,
+    NULL,
+    clientThread,
+    client
+  );
+
+  if(ret != 0) {
+    close(client->networked.socket);
+    return error("Failed to create client thread %s", strerror(errno));
+  }
+
+  // Wait for the thread to start
+  while(client->state == CLIENT_STATE_CONNECTING) {
+    usleep(1000);
+  }
+
+  return ERROR_OK;
+}
+
+void networkedClientDisconnect(client_t *client) {
+  assertNotNull(client, "Client is NULL");
+  assertIsMainThread("Client disconnect must be on main thread");
+  assertTrue(client->type == CLIENT_TYPE_NETWORKED, "Client is not networked");
+  assertTrue(client->state == CLIENT_STATE_CONNECTED, "Client not connected");
+
+  client->state = CLIENT_STATE_DISCONNECTING;
+
+  int32_t maxAttempts = 0;
+  while(client->state == CLIENT_STATE_DISCONNECTING) {
+    usleep(1000);
+    maxAttempts++;
+    if(maxAttempts > 15) {
+      consolePrint("Client disconnect timed out, force closing");
+      break;
+    }
+  }
+
+  client->state = CLIENT_STATE_DISCONNECTED;
+  if(client->networked.thread) {
+    pthread_join(client->networked.thread, NULL);
+    client->networked.thread = 0;
+  }
+
+  if(client->networked.socket) {
+    shutdown(client->networked.socket, SHUT_RDWR);
+    close(client->networked.socket);
+    client->networked.socket = 0;
+  }
+
+  consolePrint("Client disconnected");
+}
+
+errorret_t networkedClientWrite(
+  const client_t *client,
+  const uint8_t *data,
+  const size_t len
+) {
+  assertNotNull(client, "Client is NULL");
+  assertNotNull(data, "Data is NULL");
+  assertTrue(len > 0, "Data length is 0");
+  assertTrue(client->type == CLIENT_TYPE_NETWORKED, "Client is not networked");
+
+  if(client->state == CLIENT_STATE_DISCONNECTED) {
+    return error("Client is disconnected");
+  }
+
+  ssize_t sent = send(client->networked.socket, data, len, 0);
+  if(sent < 0) return error("Failed to send data");
+  return ERROR_OK;
+}
+
+errorret_t networkedClientWritePacket(
+  const client_t *client,
+  const packet_t *packet
+) {
+  assertNotNull(packet, "Packet is NULL");
+  assertTrue(packet->type != PACKET_TYPE_INVALID, "Packet type is INVALID");
+  assertTrue(packet->length > 0, "Packet length is 0");
+  assertTrue(
+    packet->length <= sizeof(packetdata_t),
+    "Packet length is too large (1)"
+  );
+
+  size_t fullSize = sizeof(packet_t) - sizeof(packet->data) + packet->length;
+  assertTrue(fullSize <= sizeof(packet_t), "Packet size is too large (2)");
+  return networkedClientWrite(client, (const uint8_t *)packet, fullSize);
+}
+
+errorret_t networkedClientReadPacket(
+  const client_t *client,
+  packet_t *packet
+) {
+  uint8_t buffer[sizeof(packet_t)];
+
+  assertNotNull(client, "Client is NULL");
+  assertNotNull(packet, "Packet is NULL");
+  assertTrue(client->type == CLIENT_TYPE_NETWORKED, "Client is not networked");
+
+  if(client->state == CLIENT_STATE_DISCONNECTED) {
+    return error("Client is disconnected");
+  }
+
+  // Read the packet header
+  ssize_t read = recv(
+    client->networked.socket,
+    buffer,
+    sizeof(packettype_t),
+    0
+  );
+  if(read != sizeof(packettype_t)) {
+    return error("Failed to read packet header %s", strerror(errno));
+  }
+
+  packet->type = *(packettype_t *)buffer;
+
+  // Read the packet length
+  read = recv(
+    client->networked.socket,
+    buffer,
+    sizeof(uint32_t),
+    0
+  );
+  if(read != sizeof(uint32_t)) {
+    return error("Failed to read packet length %s", strerror(errno));
+  }
+  if(read > sizeof(packetdata_t)) {
+    return error("Packet length is too large");
+  }
+  packet->length = *(uint32_t *)buffer;
+
+  // Now, read the packet data
+  read = recv(
+    client->networked.socket,
+    (uint8_t *)&packet->data,
+    packet->length,
+    0
+  );
+  if(read != packet->length) {
+    return error("Failed to read packet data %s", strerror(errno));
+  }
+  return ERROR_OK;
+}
+
+void * clientThread(void *arg) {
+  assertNotNull(arg, "Client thread argument is NULL");
+  assertNotMainThread("Client thread must not be on main thread");
+
+  client_t *client = (client_t *)arg;
+  assertTrue(
+    client->type == CLIENT_TYPE_NETWORKED,
+    "Client thread argument is not networked"
+  );
+  assertTrue(
+    client->state == CLIENT_STATE_CONNECTING,
+    "Client thread argument is not connecting"
+  );
+
+  client->state = CLIENT_STATE_CONNECTED;
+
+  while(client->state == CLIENT_STATE_CONNECTED) {
+    usleep(1000 * 1000);
+  }
+
+  printf("Client thread exiting\n");
+}

src/client/networked/networkedclient.h

@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) 2025 Dominic Masters
+ * 
+ * This software is released under the MIT License.
+ * https://opensource.org/licenses/MIT
+ */
+
+#pragma once
+#include "error/error.h"
+#include <arpa/inet.h>
+#include "server/packet/packet.h"
+
+typedef struct client_s client_t;
+typedef struct clientconnect_s clientconnect_t;
+
+typedef struct {
+  uint16_t port;
+} networkedclientconnect_t;
+
+typedef struct {
+  int32_t socket;
+  struct sockaddr_in address;
+  pthread_t thread;
+} networkedclient_t;
+
+/**
+ * Connects to a networked server.
+ * 
+ * @param client Pointer to the client structure.
+ * @param connect Connection information.
+ */
+errorret_t networkedClientConnect(
+  client_t *client,
+  const networkedclientconnect_t connect
+);
+
+/**
+ * Closes the connection to a networked server.
+ * 
+ * @param client Pointer to the client structure.
+ */
+void networkedClientDisconnect(client_t *client);
+
+/**
+ * Writes data to the networked server.
+ * 
+ * @param client Pointer to the client structure.
+ * @param data Data to write.
+ * @param len Length of the data.
+ * @return Error code.
+ */
+errorret_t networkedClientWrite(
+  const client_t *client,
+  const uint8_t *data,
+  const size_t len
+);
+
+/**
+ * Writes a packet to the networked server.
+ * 
+ * @param client Pointer to the client structure.
+ * @param packet Pointer to the packet structure.
+ * @return Error code.
+ */
+errorret_t networkedClientWritePacket(
+  const client_t *client,
+  const packet_t *packet
+);
+
+/**
+ * Reads a packet from the networked server.
+ * 
+ * @param client Pointer to the client structure.
+ * @param packet Pointer to the packet structure to read into.
+ * @return Error code.
+ */
+errorret_t networkedClientReadPacket(const client_t *client, packet_t *packet);
+
+/**
+ * Thread function for handling networked client connections.
+ * 
+ * @param arg Pointer to the client structure.
+ * @return NULL.
+ */
+void * networkedClientThread(void *arg);

src/main.c

@@ -6,6 +6,7 @@
  */
 
 #include "console/console.h"
+#include "client/client.h"
 #include "server/server.h"
 #include "util/string.h"
 #include "assert/assert.h"
@@ -16,41 +17,13 @@ void cmdExit(const consolecmdexec_t *exec) {
   exitRequested = true;
 }
 
-void cmdServe(const consolecmdexec_t *exec) {
-  uint16_t port = 3030;
-  if(exec->argc != 0) {
-    if(!stringToU16(exec->argv[0], &port)) {
-      consolePrint("Invalid port number: %s", exec->argv[0]);
-      return;
-    }
-  }
-
-  errorret_t ret = serverStart((serverstart_t){
-    .type = SERVER_TYPE_NETWORKED,
-    .networked = {
-      .port = 3030
-    }
-  });
-  
-  if(ret != ERROR_OK) {
-    consolePrint("Failed to start server: %s", errorString());
-    errorFlush();
-    return;
-  }
-}
-
-void cmdClose(const consolecmdexec_t *exec) {
-  serverStop();
-}
-
 int main(void) {
   assertInit();
   consoleInit();
+  clientInit();
   serverInit();
 
   consoleRegCmd("exit", cmdExit);
-  consoleRegCmd("serve", cmdServe);
-  consoleRegCmd("close", cmdClose);
 
   InitWindow(1280, 720, DUSK_NAME);
 
@@ -68,7 +41,9 @@ int main(void) {
   }
 
   CloseWindow();
+  
   serverDispose();
+  clientDispose();
   
   return EXIT_SUCCESS;
 }

src/server/networked/networkedserver.h

@@ -10,6 +10,10 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 
+typedef struct {
+  uint16_t port;
+} networkedserverstart_t;
+
 typedef struct {
   int socket;
   struct sockaddr_in address;

src/server/networked/networkedserverclient.c

@@ -207,6 +207,7 @@ void * networkedServerClientThread(void *arg) {
       return NULL;
     }
 
+
     buffer[read] = '\0'; // Null-terminate the string
     if(strncmp(buffer, expecting, strlen(expecting)) != 0) {
       packetDisconnectCreate(&packet, PACKET_DISCONNECT_REASON_INVALID_VERSION);
@@ -238,17 +239,16 @@ void * networkedServerClientThread(void *arg) {
 
     
     if(SERVER.state != SERVER_STATE_RUNNING) {
-      networkedServerClientCloseOnThread(client, "Server is shutting down");
-      break;
-    }
-  }
-
       packetDisconnectCreate(
         &packet,
         PACKET_DISCONNECT_REASON_SERVER_SHUTDOWN
       );
       networkedServerClientWritePacket(client, &packet);
       if(errorCheck()) errorPrint();
+      networkedServerClientCloseOnThread(client, "Server is shutting down");
+      break;
+    }
+  }
   
   client->state = SERVER_CLIENT_STATE_DISCONNECTED;
   return NULL;

src/server/packet/packetdisconnect.c

@@ -7,6 +7,7 @@
 
 #include "packet.h"
 #include "util/memory.h"
+#include "assert/assert.h"
 
 void packetDisconnectCreate(
   packet_t *packet,
@@ -15,3 +16,31 @@ void packetDisconnectCreate(
   packetInit(packet, PACKET_TYPE_DISCONNECT, sizeof(packetdisconnect_t));
   packet->data.disconnect.reason = reason;
 }
+
+errorret_t packetDisconnectClient(packet_t *packet) {
+  assertNotNull(packet, "Packet is NULL");
+  assertTrue(
+    packet->type == PACKET_TYPE_DISCONNECT,
+    "Packet type is not DISCONNECT"
+  );
+
+  if(packet->length != sizeof(packetdisconnect_t)) {
+    return error("Disconnect packet length is not correct");
+  }
+
+  packetdisconnect_t *data = (packetdisconnect_t *)&packet->data;
+  switch(data->reason) {
+    case PACKET_DISCONNECT_REASON_UNKNOWN:
+      return error("Server disconnected: Unknown reason");
+    case PACKET_DISCONNECT_REASON_INVALID_VERSION:
+      return error("Server disconnected: Invalid version");
+    case PACKET_DISCONNECT_REASON_MALFORMED_PACKET:
+      return error("Server disconnected: Malformed packet");
+    case PACKET_DISCONNECT_REASON_SERVER_FULL:
+      return error("Server disconnected: Server full");
+    case PACKET_DISCONNECT_REASON_SERVER_SHUTDOWN:
+      return error("Server disconnected: Server shutdown");
+    default:
+      return error("Server disconnected: Unknown reason");
+  }
+}

src/server/packet/packetdisconnect.h

@@ -6,7 +6,7 @@
  */
 
 #pragma once
-#include "dusk.h"
+#include "error/error.h"
 
 typedef struct packet_s packet_t;
 
@@ -32,3 +32,11 @@ void packetDisconnectCreate(
   packet_t *packet,
   const packetdisconnectreason_t reason
 );
+
+/**
+ * Handles a disconnect packet received FROM a server INTO a client.
+ * 
+ * @param packet Pointer to the packet structure to handle.
+ * @return ERROR_OK on success, or an error code on failure.
+ */
+errorret_t packetDisconnectClient(packet_t *packet);

src/server/packet/packetwelcome.c

@@ -7,6 +7,7 @@
 
 #include "packet.h"
 #include "util/memory.h"
+#include "assert/assert.h"
 
 void packetWelcomeCreate(packet_t *packet) {
   packetInit(packet, PACKET_TYPE_WELCOME, PACKET_WELCOME_SIZE);
@@ -14,3 +15,22 @@ void packetWelcomeCreate(packet_t *packet) {
     packet->data.welcome.dusk, PACKET_WELCOME_STRING, PACKET_WELCOME_SIZE
   );
 }
+
+errorret_t packetWelcomeClient(packet_t *packet) {
+  assertNotNull(packet, "Packet is NULL");
+  assertTrue(packet->type == PACKET_TYPE_WELCOME, "Packet type is not WELCOME");
+
+  if(packet->length != PACKET_WELCOME_SIZE) {
+    return error("Welcome packet length is not %d", PACKET_WELCOME_SIZE);
+  }
+
+  if(
+    memoryCompare(
+      packet->data.welcome.dusk, PACKET_WELCOME_STRING, PACKET_WELCOME_SIZE
+    ) != 0
+  ) {
+    return error("Welcome packet data is not %s", PACKET_WELCOME_STRING);
+  }
+
+  return ERROR_OK;
+}

src/server/packet/packetwelcome.h

@@ -6,7 +6,7 @@
  */
 
 #pragma once
-#include "dusk.h"
+#include "error/error.h"
 
 typedef struct packet_s packet_t;
 
@@ -23,3 +23,11 @@ typedef struct {
  * @param packet Pointer to the packet structure to initialize.
  */
 void packetWelcomeCreate(packet_t *packet);
+
+/**
+ * Handles a welcome packet received FROM a server INTO a client.
+ * 
+ * @param packet Pointer to the packet structure to handle.
+ * @return ERROR_OK on success, or an error code on failure.
+ */
+errorret_t packetWelcomeClient(packet_t *packet);

src/server/server.c

@@ -9,15 +9,61 @@
 #include "util/memory.h"
 #include "assert/assert.h"
 #include "console/console.h"
+#include "util/string.h"
 
 server_t SERVER;
 
+void cmdStart(const consolecmdexec_t *exec) {
+  serverstart_t start;
+
+  if(exec->argc > 0) {
+    if(stringCompare(exec->argv[1], "0") == 0) {
+      start.type = SERVER_TYPE_SINGLE_PLAYER;
+    } else if(stringCompare(exec->argv[0], "1") == 0) {
+      start.type = SERVER_TYPE_NETWORKED;
+    } else {
+      consolePrint("Invalid server type: %s", exec->argv[0]);
+      return;
+    }
+  } else {
+    start.type = SERVER_TYPE_SINGLE_PLAYER;
+  }
+
+  if(exec->argc > 1) {
+    if(start.type == SERVER_TYPE_NETWORKED) {
+      if(!stringToU16(exec->argv[1], &start.networked.port)) {
+        consolePrint("Invalid port number: %s", exec->argv[0]);
+        return;
+      }
+    }
+  } else {
+    if(start.type == SERVER_TYPE_NETWORKED) {
+      start.networked.port = SERVER_DEFAULT_PORT;
+    }
+  }
+
+  errorret_t ret = serverStart(start);
+  if(ret != ERROR_OK) {
+    consolePrint("Failed to start server: %s", errorString());
+    errorFlush();
+    return;
+  }
+}
+
+void cmdClose(const consolecmdexec_t *exec) {
+  serverStop();
+}
+
 void serverInit() {
   memoryZero(&SERVER, sizeof(server_t));
   SERVER.state = SERVER_STATE_STOPPED;
+
+  consoleRegCmd("start", cmdStart);
+  consoleRegCmd("close", cmdClose);
 }
 
 errorret_t serverStart(const serverstart_t start) {
+  errorret_t ret;
   assertIsMainThread("Server start must be on main thread");
 
   // Do not start a running server.
@@ -30,12 +76,15 @@ errorret_t serverStart(const serverstart_t start) {
   // Hand off to relevant server type to start.
   switch(start.type) {
     case SERVER_TYPE_NETWORKED:
-      return networkedServerStart(&SERVER, start);
+      ret = networkedServerStart(&SERVER, start);
       break;
 
     default:
       assertUnreachable("Invalid server type");
   }
+
+  if(ret != ERROR_OK) SERVER.state = SERVER_STATE_STOPPED;
+  return ret;
 }
 
 uint8_t serverGetClientCount() {

src/server/server.h

@@ -10,6 +10,7 @@
 #include "server/networked/networkedserver.h"
 
 #define SERVER_MAX_CLIENTS 32
+#define SERVER_DEFAULT_PORT 3030
 
 typedef enum {
   SERVER_STATE_STOPPED,
@@ -26,9 +27,7 @@ typedef enum {
 typedef struct serverstart_s {
   servertype_t type;
   union {
-    struct {
+    networkedserverstart_t networked;
-      uint16_t port;
-    } networked;
   };
 } serverstart_t;
 

src/server/serverclient.c

@@ -14,6 +14,7 @@ errorret_t serverClientAccept(
   serverclient_t *client,
   const serverclientaccept_t accept
 ) {
+  errorret_t ret;
   memoryZero(client, sizeof(serverclient_t));
   assertNotNull(accept.server, "Server is NULL");
   assertNotMainThread("Server client accept must not be main thread");
@@ -22,11 +23,14 @@ errorret_t serverClientAccept(
 
   switch(accept.server->type) {
     case SERVER_TYPE_NETWORKED:
-      return networkedServerClientAccept(client, accept);
+      ret = networkedServerClientAccept(client, accept);
 
     default:
       assertUnreachable("Unknown server type");
   }
+
+  if(ret != ERROR_OK) memoryZero(client, sizeof(serverclient_t));
+  return ret;
 }
 
 void serverClientClose(serverclient_t *client) {

src/util/memory.c

@@ -58,3 +58,14 @@ void memoryMove(void *dest, const void *src, const size_t size) {
   assertTrue(dest != src, "Cannot move memory to itself.");
   memmove(dest, src, size);
 }
+
+ssize_t memoryCompare(
+  const void *a,
+  const void *b,
+  const size_t size
+) {
+  assertNotNull(a, "Cannot compare NULL memory.");
+  assertNotNull(b, "Cannot compare NULL memory.");
+  assertTrue(size > 0, "Cannot compare 0 bytes of memory.");
+  return memcmp(a, b, size);
+}

src/util/memory.h

@@ -74,3 +74,17 @@ void memoryCopyRangeSafe(
  * @param size The size of the memory to move.
  */
 void memoryMove(void *dest, const void *src, const size_t size);
+
+/**
+ * Compares memory.
+ * 
+ * @param a The first memory to compare.
+ * @param b The second memory to compare.
+ * @param size The size of the memory to compare.
+ * @return 0 if the memory is equal, < 0 if a < b, > 0 if a > b.
+ */
+ssize_t memoryCompare(
+  const void *a,
+  const void *b,
+  const size_t size
+);