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mcp: establish the streamable client standalone SSE stream in Connect (#604)

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When Connect returns, client should be guaranteed that the streamable
SSE stream is connected.

Fixes #583
This commit is contained in:
Robert Findley 2025-10-27 14:03:22 -04:00 • committed by GitHub
commit ae6bda692b
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1 changed files with 118 additions and 159 deletions
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9
mcp/streamable_test.go
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@ -594,14 +594,7 @@ func TestServerInitiatedSSE(t *testing.T) {
notifications := make(chan string)
server := NewServer(testImpl, nil)
opts := &StreamableHTTPOptions{
// TODO(#583): for now, this is required for guaranteed message delivery.
// However, it shouldn't be necessary to use replay here, as we should be
// guaranteed that the standalone SSE stream is started by the time the
// client is connected.
EventStore: NewMemoryEventStore(nil),
}
httpServer := httptest.NewServer(mustNotPanic(t, NewStreamableHTTPHandler(func(*http.Request) *Server { return server }, opts)))
httpServer := httptest.NewServer(mustNotPanic(t, NewStreamableHTTPHandler(func(*http.Request) *Server { return server }, nil)))
defer httpServer.Close()
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)