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fix(client): probe stdio servers on a disposable sibling process (#2514)

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This commit is contained in:
Felix Weinberger 2026-07-21 13:07:12 +01:00 • committed by GitHub
commit 6fe196310d
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1 changed files with 1119 additions and 66 deletions
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9
test/e2e/scenarios/stdio-dual-era.test.ts
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@ -53,9 +53,10 @@ verifies('typescript:transport:stdio:dual-era-serving', async ({ protocolVersion
return;
}
// Modern leg: the auto-negotiating client reaches 2026-07-28 via
// server/discover on the pipe (no initialize is ever written), the entry
// pins the connection to a 2026-era instance, and tools/call round-trips
// Modern leg: the auto-negotiating client reaches 2026-07-28 via the
// disposable sibling probe (the session pipe carries neither initialize
// nor server/discover), the entry pins the connection to a 2026-era
// instance from the first enveloped request, and tools/call round-trips
// with the per-request envelope.
const sentMethods: string[] = [];
const originalSend = transport.send.bind(transport);
@ -69,7 +70,7 @@ verifies('typescript:transport:stdio:dual-era-serving', async ({ protocolVersion
await client.connect(transport);
expect(client.getNegotiatedProtocolVersion()).toBe(protocolVersion);
expect(sentMethods).not.toContain('initialize');
expect(sentMethods[0]).toBe('server/discover');
expect(sentMethods).not.toContain('server/discover');
const result = await client.callTool({ name: 'echo', arguments: { text: 'modern leg' } });
expect(result.content).toEqual([{ type: 'text', text: 'modern leg' }]);