fix(client): back off event stream reconnection attempts

packages/client/src/solid/connection.ts

@@ -26,6 +26,7 @@ export type ClientConnectionOptions = {
 
 const connectTimeout = 2_000
 const reconnectDelay = 1_000
+const maxReconnectDelay = 30_000
 const connectionHistoryLimit = 50
 
 export function createClientConnection(initialApi: OpenCodeClient, options: ClientConnectionOptions) {
@@ -140,7 +141,7 @@ export function createClientConnection(initialApi: OpenCodeClient, options: Clie
           if (attempt === 1) continue
         }
       }
-      await wait(reconnectDelay, controller.signal)
+      await wait(Math.min(reconnectDelay * 2 ** (attempt - 1), maxReconnectDelay), controller.signal)
     }
   }
 

packages/client/test/solid-connection.test.ts

@@ -0,0 +1,28 @@
+import { expect, test } from "bun:test"
+import { createRoot } from "solid-js"
+import { isServer } from "solid-js/web"
+import { OpenCode } from "../src/promise"
+import { createClientConnection } from "../src/solid"
+
+test.skipIf(isServer)("backs off repeated event stream failures", async () => {
+  const attempts: number[] = []
+  const api = OpenCode.make({
+    baseUrl: "http://offline.example",
+    fetch: async () => {
+      attempts.push(Date.now())
+      throw new TypeError("Server is offline")
+    },
+  })
+  const setup = createRoot((dispose) => ({
+    connection: createClientConnection(api, { onEvent() {} }),
+    dispose,
+  }))
+
+  try {
+    await Bun.sleep(2_500)
+    expect(attempts.length).toBe(2)
+    expect(setup.connection.attempt()).toBe(2)
+  } finally {
+    setup.dispose()
+  }
+})