fix: skip body and Content-Type for GET/HEAD webhooks

jetstream.ts

@@ -24,16 +24,17 @@ const fireWebhooks = async (
   const webhooks = getWebhooksByDid(did);
   if (webhooks.length === 0) return;
   const results = await Promise.allSettled(
-    webhooks.map(({ method, url, token }) =>
-      fetch(url, {
+    webhooks.map(({ method, url, token }) => {
+      const hasBody = method !== "GET" && method !== "HEAD";
+      return fetch(url, {
         method,
         headers: {
-          "Content-Type": "application/json",
+          ...(hasBody ? { "Content-Type": "application/json" } : {}),
           ...(token ? { Authorization: `Bearer ${token}` } : {}),
         },
-        body: JSON.stringify(payload),
-      })
-    ),
+        body: hasBody ? JSON.stringify(payload) : undefined,
+      });
+    }),
   );
   for (const result of results) {
     if (result.status === "rejected") {