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NS_E_NETWORK_SINK_WRITE
Diagnosing NS_E_NETWORK_SINK_WRITE
0xC00D2EF8 means the streaming session was established far enough for the network sink to write media bytes, and that write failed. It is therefore later than DNS/connect negotiation and should be correlated with the first send/socket result.
Evidence to collect
- peer endpoint, selected protocol and session identifier;
- media packet/byte offset, requested send length and bytes accepted before failure;
- first socket error plus reset, timeout or backpressure indication;
- proxy/gateway identity if it participates in the established media path.
Focused test
Repeat the same session path while capturing send completion and peer reset/close events. A connection that opens successfully but fails at the same media offset points to sink/peer flow control or transport termination, not name resolution. Compare with a small controlled stream only to determine whether failure depends on payload duration or rate.
Verification
Confirm that the original stream crosses the previously failing write and that the peer receives the full expected payload. A new response-parser or session HRESULT after the write succeeds is a separate stage.
Technical references
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