INNER CODE UNIT · Rust

run_auth_client

modelcontextprotocol/rust-sdk · conformance/src/bin/client.rs:353

async fn run_auth_client(server_url: &str, ctx: &ConformanceContext) -> anyhow::Result<()> {
    let auth_client = perform_oauth_flow(server_url, ctx).await?;

    let transport = StreamableHttpClientTransport::with_client(
        auth_client,
        StreamableHttpClientTransportConfig::with_uri(server_url),
    );

    // The 2026-07-28 auth mocks require the modern per-request lifecycle
    // (MCP-Protocol-Version header on every request), so negotiate via the
    // discover lifecycle rather than the legacy initialize handshake.
    let client = BasicClientHandler
        .serve_with_lifecycle(
            transport,
            ClientLifecycleMode::Discover {
                preferred_versions: preferred_protocol_versions(),
            },
        )

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