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fix(opencode): add oauth polling safety margin in copilot device authentication #8986

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Merged
rekram1-node merged 2 commits into from
Jan 16, 2026
+22 −2
Merged

fix(opencode): add oauth polling safety margin in copilot device authentication #8986

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1ac8248
fix(opencode): add oauth polling safety margin to prevent slow_down e…
hamir-suspect Jan 16, 2026
8024ba7
refactor: replace setTimeout promises with Bun.sleep
hamir-suspect Jan 16, 2026
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24 changes: 22 additions & 2 deletions packages/opencode/src/plugin/copilot.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,9 @@ import { Installation } from "@/installation"
import { iife } from "@/util/iife"

const CLIENT_ID = "Ov23li8tweQw6odWQebz"
// Add a small safety buffer when polling to avoid hitting the server
// slightly too early due to clock skew / timer drift.
const OAUTH_POLLING_SAFETY_MARGIN_MS = 3000 // 3 seconds

function normalizeDomain(url: string) {
return url.replace(/^https?:\/\//, "").replace(/\/$/, "")
Expand Down Expand Up @@ -204,6 +207,7 @@ export async function CopilotAuthPlugin(input: PluginInput): Promise<Hooks> {
const data = (await response.json()) as {
access_token?: string
error?: string
interval?: number
}

if (data.access_token) {
Expand All @@ -230,13 +234,29 @@ export async function CopilotAuthPlugin(input: PluginInput): Promise<Hooks> {
}

if (data.error === "authorization_pending") {
await new Promise((resolve) => setTimeout(resolve, deviceData.interval * 1000))
await Bun.sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
continue
}

if (data.error === "slow_down") {
// Based on the RFC spec, we must add 5 seconds to our current polling interval.
// (See https://www.rfc-editor.org/rfc/rfc8628#section-3.5)
let newInterval = (deviceData.interval + 5) * 1000

// GitHub OAuth API may return the new interval in seconds in the response.
// We should try to use that if provided with safety margin.
const serverInterval = data.interval
if (serverInterval && typeof serverInterval === 'number' && serverInterval > 0) {
newInterval = serverInterval * 1000
}

await Bun.sleep(newInterval + OAUTH_POLLING_SAFETY_MARGIN_MS)
continue
}

if (data.error) return { type: "failed" as const }

await new Promise((resolve) => setTimeout(resolve, deviceData.interval * 1000))
await Bun.sleep(deviceData.interval * 1000 + OAUTH_POLLING_SAFETY_MARGIN_MS)
continue
}
},
Expand Down