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Line 391:
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→GetNextAlpnProto
[[#SetSocketDescriptor]] must have been used prior to this successfully.
[[#SetSocketDescriptor]] must have been used prior to this successfully.
The u32 is the output string length.
The buffer contains the output string. The u32 is the output string length.
The output will be all-zero/empty if not available - such as when this was used before DoHandshake*.
The output will be all-zero/empty if not available - such as when this was used before DoHandshake*.