publish works

starting to use errors instead of unreachable for stream parsing

src/server/main.zig

@@ -180,6 +180,7 @@ fn publishMessage(server: *Server, io: std.Io, msg: Message.Pub) !void {
 }
 
 fn subscribe(server: *Server, gpa: std.mem.Allocator, id: usize, msg: Message.Sub) !void {
+    std.debug.print("Recieved SUBSCRIBE message: {any}\n\n", .{msg});
     var subs_for_subject: std.AutoHashMapUnmanaged(usize, []const u8) = if (server.subscriptions.fetchRemove(msg.subject)) |s| s.value else .empty;
     try subs_for_subject.put(gpa, id, msg.sid);
     try server.subscriptions.put(gpa, msg.subject, subs_for_subject);