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Merge pull request #455 from koic/reject_notifications_for_unknown_sessions

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Reject notifications carrying an unknown or expired session
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Koichi ITO 2026-07-15 12:01:42 +09:00 • committed by GitHub
commit 5425c9c4ee
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34
test/mcp/server/transports/streamable_http_transport_test.rb
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@ -525,6 +525,40 @@ module MCP
assert_equal "Missing session ID", body["error"]["message"]
end
test "rejects notification with an unknown session ID in stateful mode" do
request = create_rack_request(
"POST",
"/",
{ "CONTENT_TYPE" => "application/json", "HTTP_MCP_SESSION_ID" => "does-not-exist" },
{ jsonrpc: "2.0", method: "notifications/initialized" }.to_json,
)
response = @transport.handle_request(request)
assert_equal 404, response[0]
body = JSON.parse(response[2][0])
assert_equal "Session not found", body["error"]["message"]
end
test "accepts a notification carrying a live session ID in stateful mode" do
init_request = create_rack_request(
"POST",
"/",
{ "CONTENT_TYPE" => "application/json" },
{ jsonrpc: "2.0", method: "initialize", id: "init", params: initialize_params }.to_json,
)
session_id = @transport.handle_request(init_request)[1]["Mcp-Session-Id"]
notification = create_rack_request(
"POST",
"/",
{ "CONTENT_TYPE" => "application/json", "HTTP_MCP_SESSION_ID" => session_id },
{ jsonrpc: "2.0", method: "notifications/initialized" }.to_json,
)
response = @transport.handle_request(notification)
assert_equal 202, response[0]
end
test "rejects response without session ID in stateful mode" do
request = create_rack_request(
"POST",