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discard DATAGRAM frames that don't fit into packets without an ACK (#4221)

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If the packet doesn't contain an ACK (i.e. the payload is empty),
there's no point retrying to pack it later. It's extremely unlikely that
the available packet size will suddenly increase.
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Marten Seemann 2024-01-01 10:17:25 +07:00 • committed by GitHub
parent d6e3f3229f
commit 7f080dd54b
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3 changed files with 41 additions and 14 deletions
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8
interface.go
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@ -187,8 +187,12 @@ type Connection interface {
// Warning: This API should not be considered stable and might change soon.
ConnectionState() ConnectionState
// SendDatagram sends a message as a datagram, as specified in RFC 9221.
SendDatagram([]byte) error
// SendDatagram sends a message using a QUIC datagram, as specified in RFC 9221.
// There is no delivery guarantee for DATAGRAM frames, they are not retransmitted if lost.
// The payload of the datagram needs to fit into a single QUIC packet.
// In addition, a datagram may be dropped before being sent out if the available packet size suddenly decreases.
// If the payload is too large to be sent at the current time, a DatagramTooLargeError is returned.
SendDatagram(payload []byte) error
// ReceiveDatagram gets a message received in a datagram, as specified in RFC 9221.
ReceiveDatagram(context.Context) ([]byte, error)
}