chore(mcp): remove support for extension protocol v1#41857
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All clients use protocol v2 by now. Remove the v1 handlers on both the relay and the extension side and collapse the abstractions that only existed to support two protocol versions: - Relay: drop ExtensionProtocolV1 and the ExtensionProtocolHandler interface, always use ExtensionProtocolV2. - Extension: fold the v2 protocol handler into RelayConnection, drop the eager (v1) pending connection path and the protocolVersion plumbing. The connect page now rejects clients requesting protocol version < 2.
pavelfeldman
approved these changes
Jul 17, 2026
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Test results for "MCP"7760 passed, 1249 skipped Merge workflow run. |
This was referenced Jul 18, 2026
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All clients use protocol v2 by now. Remove the v1 handlers on both the relay and the extension side and collapse the abstractions that only existed to support two protocol versions: