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fix: isolate concurrent browser agent instances (#24794)

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Gaurav
2026-04-08 22:31:10 +08:00
committed by GitHub
parent 1b3e7d674f
commit e77b22e638
8 changed files with 458 additions and 185 deletions
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8
integration-tests/browser-agent.concurrent.responses Normal file
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@@ -0,0 +1,8 @@
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"text":"I'll launch two browser agents concurrently to check both repositories."},{"functionCall":{"name":"browser_agent","args":{"task":"Navigate to https://example.com and get the page title"}}},{"functionCall":{"name":"browser_agent","args":{"task":"Navigate to https://example.com and get the page title"}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":100,"candidatesTokenCount":50,"totalTokenCount":150}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"navigate_page","args":{"url":"https://example.com"}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":100,"candidatesTokenCount":20,"totalTokenCount":120}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"navigate_page","args":{"url":"https://example.com"}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":100,"candidatesTokenCount":20,"totalTokenCount":120}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"take_snapshot","args":{}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":150,"candidatesTokenCount":15,"totalTokenCount":165}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"take_snapshot","args":{}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":150,"candidatesTokenCount":15,"totalTokenCount":165}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"complete_task","args":{"result":{"success":true,"summary":"Page title is Example Domain."}}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":200,"candidatesTokenCount":30,"totalTokenCount":230}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"functionCall":{"name":"complete_task","args":{"result":{"success":true,"summary":"Page title is Example Domain."}}}}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":200,"candidatesTokenCount":30,"totalTokenCount":230}}]}
{"method":"generateContentStream","response":[{"candidates":[{"content":{"parts":[{"text":"Both browser agents completed successfully. Agent 1 and Agent 2 both navigated to their respective pages and confirmed the page titles."}],"role":"model"},"finishReason":"STOP","index":0}],"usageMetadata":{"promptTokenCount":300,"candidatesTokenCount":40,"totalTokenCount":340}}]}

44
integration-tests/browser-agent.test.ts
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@@ -307,4 +307,48 @@ describe.skipIf(!chromeAvailable)('browser-agent', () => {
await run.expectText('successfully written', 15000);
});
it('should handle concurrent browser agents with isolated session mode', async () => {
rig.setup('browser-concurrent', {
fakeResponsesPath: join(__dirname, 'browser-agent.concurrent.responses'),
settings: {
agents: {
overrides: {
browser_agent: {
enabled: true,
},
},
browser: {
headless: true,
// Isolated mode supports concurrent browser agents.
// Persistent/existing modes reject concurrent calls to prevent
// Chrome profile lock conflicts.
sessionMode: 'isolated',
},
},
},
});
const result = await rig.run({
args: 'Launch two browser agents concurrently to check example.com',
});
assertModelHasOutput(result);
const toolLogs = rig.readToolLogs();
const browserCalls = toolLogs.filter(
(t) => t.toolRequest.name === 'browser_agent',
);
// Both browser_agent invocations should have been called
expect(browserCalls.length).toBe(2);
// Both should complete successfully (no errors)
for (const call of browserCalls) {
expect(
call.toolRequest.success,
`browser_agent call failed: ${JSON.stringify(call.toolRequest)}`,
).toBe(true);
}
});
});