Fix exit() in library code, add --include/--max-size/--min-size

src/shared/transport_tcp.c

@@ -12,13 +12,14 @@ Server *server_create(int port) {
   Server *server = (Server *)malloc(sizeof(Server));
   if (server == NULL) {
     perror("Could not allocate space for Server");
-    exit(EXIT_FAILURE);
+    return NULL;
   }
 
   int file_descriptor = socket(AF_INET, SOCK_STREAM, 0);
   if (file_descriptor < 0) {
     perror("Could not create Socket!");
-    exit(EXIT_FAILURE);
+    free(server);
+    return NULL;
   }
   server->file_descriptor = file_descriptor;
   int opt = 1;
@@ -27,7 +28,7 @@ Server *server_create(int port) {
     perror("Error setting a socket option!");
     close(server->file_descriptor);
     free(server);
-    exit(EXIT_FAILURE);
+    return NULL;
   }
 
   server->address.sin_family = AF_INET;
@@ -40,7 +41,7 @@ Server *server_create(int port) {
     perror("Could not bind server");
     close(server->file_descriptor);
     free(server);
-    exit(EXIT_FAILURE);
+    return NULL;
   }
 
   return server;
@@ -52,12 +53,12 @@ void server_delete(Server **server) {
   *server = NULL;
 }
 
-void server_listen(Server *server, void (*handler)(int file_descriptor)) {
+bool server_listen(Server *server, void (*handler)(int file_descriptor)) {
   log_message(LOG_LEVEL_INFO, "Start Listening on Port: %d",
               server->address.sin_port);
-  if (listen(server->file_descriptor, 3) < 0) {
+  if (listen(server->file_descriptor, SOMAXCONN) < 0) {
     perror("Could not listen on port!");
-    exit(EXIT_FAILURE);
+    return false;
   }
 
   int file_descriptor =
@@ -65,22 +66,27 @@ void server_listen(Server *server, void (*handler)(int file_descriptor)) {
              &server->address_length);
   if (file_descriptor < 0) {
     perror("Could not accept the connection");
-    exit(EXIT_FAILURE);
+    return false;
   }
   log_message(LOG_LEVEL_INFO, "Received Connection");
   handler(file_descriptor);
   close(server->file_descriptor);
   close(file_descriptor);
+  return true;
 }
 
 Client *client_create() {
   int file_descriptor = socket(AF_INET, SOCK_STREAM, 0);
   if (file_descriptor < 0) {
     perror("Could not create Socket!");
-    exit(EXIT_FAILURE);
+    return NULL;
   }
 
   Client *client = (Client *)malloc(sizeof(Client));
+  if (client == NULL) {
+    close(file_descriptor);
+    return NULL;
+  }
   client->file_descriptor = file_descriptor;
   client->address.sin_family = AF_INET;
   client->address_length = sizeof(client->address);
@@ -88,19 +94,20 @@ Client *client_create() {
   return client;
 }
 
-void client_connect(Client *client, char *host, int port) {
+bool client_connect(Client *client, char *host, int port) {
   client->address.sin_port = htons(port);
 
   if (inet_pton(AF_INET, host, &client->address.sin_addr) <= 0) {
     perror("Could not convert host address!");
-    exit(EXIT_FAILURE);
+    return false;
   }
 
   if (connect(client->file_descriptor, (struct sockaddr *)&client->address,
               client->address_length) < 0) {
     perror("Could not connect to Server!");
-    exit(EXIT_FAILURE);
+    return false;
   }
+  return true;
 }
 
 void client_disconnect(Client *client) {