diff --git a/app/nose/bin/share.ts b/app/nose/bin/share.ts
index 144d50b..fc7b8e1 100644
--- a/app/nose/bin/share.ts
+++ b/app/nose/bin/share.ts
@@ -1,14 +1,14 @@
 import { apps } from "app/src/webapp"
 import { connectSneaker } from "app/src/sneaker"
 
-export default async function (app: string) {
+export default async function (app: string, subdomain = "") {
   if (!app) {
-    return `usage: share <app>`
+    return `usage: share <app> [subdomain]`
   }
 
   if (!apps().includes(app)) {
     return { error: `${app} not found` }
   }
 
-  return await connectSneaker(app)
+  return await connectSneaker(app, subdomain)
 }
\ No newline at end of file
diff --git a/app/src/sneaker.ts b/app/src/sneaker.ts
index 0907f20..f5e356c 100644
--- a/app/src/sneaker.ts
+++ b/app/src/sneaker.ts
@@ -9,19 +9,25 @@ type Connection = {
     subdomain: string
     ws: any
 }
-const connections: Record<string, Connection> = {}
+const conns: Record<string, Connection> = {}
 
 // returns the sneaker subdomain if successful
-export async function connectSneaker(app: string): Promise<string> {
-    if (connections[app]) {
-        return connections[app].subdomain
+export async function connectSneaker(app: string, subdomain = ""): Promise<string> {
+    if (conns[app]) {
+        return conns[app].subdomain
     }
 
-    const ws = new WebSocket(`ws${SNEAKER_TLS ? "s" : ""}://${SNEAKER_URL}/tunnel?app=${app}`)
+    let url = `ws${SNEAKER_TLS ? "s" : ""}://${SNEAKER_URL}/tunnel?app=${app}`
+    if (subdomain) url += `&subdomain=${subdomain}`
+
+    const ws = new WebSocket(url)
     let resolve: (v: string) => void
     let promise = new Promise<string>(res => resolve = res)
 
-    ws.onclose = (e) => delete connections[app]
+    ws.onclose = e => {
+        delete conns[app]
+        setTimeout(() => connectSneaker(app, subdomain), 1000) // simple retry
+    }
 
     ws.onerror = e => console.error("sneaker error", e)
 
@@ -29,7 +35,8 @@ export async function connectSneaker(app: string): Promise<string> {
         const msg = JSON.parse(event.data.toString())
 
         if (msg.subdomain) {
-            connections[app] = { subdomain: "", ws }
+            conns[app] = { subdomain: msg.subdomain, ws }
+            subdomain = msg.subdomain
             resolve(msg.subdomain)
             return
         }