fix up some retarded bullshit

* llarp::service::NameIsValid was not checking that the tld was .loki, add this check.
* make link layer initial connection timeout 5s not the session activity timeout which happens to be 60 god damn seconds.

llarp/constants/link_layer.hpp

@@ -7,3 +7,4 @@
 constexpr size_t MAX_LINK_MSG_SIZE = 8192;
 static constexpr auto DefaultLinkSessionLifetime = 1min;
 constexpr size_t MaxSendQueueSize = 1024;
+static constexpr auto LinkLayerConnectTimeout = 5s;

llarp/iwp/session.cpp

@@ -331,7 +331,7 @@ namespace llarp
       {
         return now > m_LastRX && now - m_LastRX > SessionAliveTimeout;
       }
-      return now - m_CreatedAt > SessionAliveTimeout;
+      return now - m_CreatedAt >= LinkLayerConnectTimeout;
     }
 
     bool

llarp/service/endpoint.cpp

@@ -819,6 +819,11 @@ namespace llarp
         std::string name,
         std::function<void(std::optional<std::variant<Address, RouterID>>)> handler)
     {
+      if (not NameIsValid(name))
+      {
+        handler(std::nullopt);
+        return;
+      }
       auto& cache = m_state->nameCache;
       const auto maybe = cache.Get(name);
       if (maybe.has_value())

llarp/service/name.cpp

@@ -19,6 +19,9 @@ namespace llarp::service
   bool
   NameIsValid(std::string_view lnsName)
   {
+    // make sure it ends with .loki because no fucking shit right?
+    if (not ends_with(lnsName, ".loki"))
+      return false;
     // strip off .loki suffix
     lnsName = lnsName.substr(0, lnsName.find_last_of('.'));