From 0375145ea28d38b32e411834b14018913462abd4 Mon Sep 17 00:00:00 2001
From: Zed <zedeus@pm.me>
Date: Wed, 8 Jul 2026 01:55:25 +0200
Subject: [PATCH] Fix crash when TID pair fetch fails

---
 src/tid.nim | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/tid.nim b/src/tid.nim
index 7b453fb..ba1f8ec 100644
--- a/src/tid.nim
+++ b/src/tid.nim
@@ -16,14 +16,16 @@ var
 
 proc getPair(): Future[TidPair] {.async.} =
   if cachedPairs.len == 0 or int(epochTime()) - lastCached > ttlSec:
-    lastCached = int(epochTime())
-
     let client = newAsyncHttpClient()
     defer: client.close()
 
     let resp = await client.get(pairsUrl)
     if resp.status == $Http200:
       cachedPairs = parseTidPairs(await resp.body)
+      lastCached = int(epochTime())
+
+  if cachedPairs.len == 0:
+    raise newException(ValueError, "Failed to fetch x-client-transaction-id pairs")
 
   return sample(cachedPairs)