added simple socket server

app.c

@@ -1,13 +1,52 @@
+#define DJSTD_BASIC_ENTRY
+
 #include "core.c"
+#include "signal.h"
 
-int main(int argc, char **argv) {
-    initialiseDjStdCore();
-    Arena *arena = arenaAlloc(Megabytes(64));
-    StringList args = getArgs(arena, argc, argv);
+Server *server = NULL;
 
-    print("Args:\n");
-    printStrList(args);
-    printStrList(strSplit(arena, s("-"), s("the-quick-brown-fox-jumps-over-the-lazy-dog")));
+void handleSigint(int dummy) {
+    if (server) {
+        print("\n");
+        print("Closing server socket.\n");
+        serverClose(server);
+        print("Success\n.");
+    }
+    exit(0);
+}
+
+int djstd_entry(Arena *arena, StringList args) {
+    signal(SIGINT, &handleSigint);
+
+    int port = 8080;
+    Int32Result portParsed = parsePositiveInt(args.data[0]);
+    if (portParsed.valid) {
+        port = portParsed.result;
+    }
+
+    print("Starting server on port %d\n", port);
+    Server myserver = serverInit((ServerInitInfo){
+        .concurrentClients=16,
+        .port=port,
+        .memory=Megabytes(64),
+    });
+
+    server = &myserver;
+
+    serverListen(&myserver);
+    Client *client = serverAccept(&myserver);
+
+    CharList buf = PushFullListZero(arena, CharList, 257);
+    uint64 bytesRead = clientRead(client, (void *)buf.data, buf.length - 1);
+
+    if (bytesRead > 0) {
+        print("Client said: %s\n", buf.data);
+        print("Now that's insightful.\n");
+    } else if (bytesRead == -1) {
+        print("Connection error\n");
+    }
+
+    clientClose(client);
 
     return 0;
 }