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Packets can't be zero-length #4391

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merged 2 commits into from Nov 18, 2020
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Packets can't be zero-length #4391

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6e3a65e
Packets can't be zero-length
martinthomson Nov 18, 2020
5ed5d48
OK, forgot the error code
martinthomson Nov 18, 2020
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14 changes: 8 additions & 6 deletions draft-ietf-quic-transport.md
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Expand Up @@ -3447,8 +3447,10 @@ Packet Payload {
{: #packet-frames title="QUIC Payload"}

The payload of a packet that contains frames MUST contain at least one frame,
and MAY contain multiple frames and multiple frame types. Frames always fit
within a single QUIC packet and cannot span multiple packets.
and MAY contain multiple frames and multiple frame types. An endpoint MUST
treat receipt of a packet containing no frames as a connection error of type
PROTOCOL_VIOLATION. Frames always fit within a single QUIC packet and cannot
span multiple packets.

Each frame begins with a Frame Type, indicating its type, followed by
additional type-dependent fields:
Expand Down Expand Up @@ -4667,7 +4669,7 @@ Initial Packet {
Token (..),
Length (i),
Packet Number (8..32),
Packet Payload (..),
Packet Payload (8..),
}
~~~
{: #initial-format title="Initial Packet"}
Expand Down Expand Up @@ -4766,7 +4768,7 @@ limitations.
Source Connection ID (0..160),
Length (i),
Packet Number (8..32),
Packet Payload (..),
Packet Payload (8..),
}
~~~
{: #0rtt-format title="0-RTT Packet"}
Expand Down Expand Up @@ -4816,7 +4818,7 @@ Handshake Packet {
Source Connection ID (0..160),
Length (i),
Packet Number (8..32),
Packet Payload (..),
Packet Payload (8..),
}
~~~
{: #handshake-format title="Handshake Protected Packet"}
Expand Down Expand Up @@ -4976,7 +4978,7 @@ Short Header Packet {
Packet Number Length (2),
Destination Connection ID (0..160),
Packet Number (8..32),
Packet Payload (..),
Packet Payload (8..),
}
~~~~~
{: #fig-short-header title="Short Header Packet Format"}
Expand Down