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Support use of net.PacketConn in dtls.Listener #570

Merged
merged 11 commits into from
Aug 27, 2023
Merged

Support use of net.PacketConn in dtls.Listener #570

merged 11 commits into from
Aug 27, 2023

Commits on Aug 27, 2023

  1. Introduce net package 

    Introduces a new net package, which defines networking interfaces used
throughout the pion/dtls code base, as well as utilities to help
consumers convert standard library net types into pion/dtls compatible
ones.

Signed-off-by: Daniel Mangum <[email protected]>
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  2. Consume net package in tests 

    Updates unit and e2e tests to consume new utilities from the dtls net
package.

Signed-off-by: Daniel Mangum <[email protected]>
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  3. Introduce net PacketBuffer 

    Introduce a network PacketBuffer which maintains a ring buffer of
network packets constituted of the packet payload and the remote address
from which it was received. This package borrows heavily from the bytes
based ring buffer in pion/transport/packetio.

Signed-off-by: Daniel Mangum <[email protected]>
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  4. Add PacketBuffer unit tests 

    Adds PacketBuffer unit tests.

Signed-off-by: Daniel Mangum <[email protected]>
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  5. Introduce UDP net.PacketListener 

    Introduces a UDP based net.PacketListener that allows for routing UDP
datagrams based on remote address _or_ an alternate identifier. It is
configured by the DatagramRouter and ConnectionIdentifier functions,
which are provided by the caller. The former introspects outgoing
datagrams for potential connection identifiers, while the latter routes
incoming datagrams by introspecting their contents. This package borrows
heavily from pion/transport/udp.

Signed-off-by: Daniel Mangum <[email protected]>
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  6. Add UDP net.PacketListener unit tests 

    Adds unit tests for UDP net.PacketListener.

Signed-off-by: Daniel Mangum <[email protected]>
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  7. Add CID based datagram routing 

    Adds functions to route datagrams and identify connections by DTLS 1.2
Connection IDs.

Signed-off-by: Daniel Mangum <[email protected]>
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  8. Add CID routing unit tests 

    Adds unit tests for CID routing functions.

Signed-off-by: Daniel Mangum <[email protected]>
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  9. Set UDP routing if CID is enabled 

    Sets UDP routing functions in the default DTLS listener if a connection
ID generator is provided. Also updates to accept a dtls
net.PacketListener when a caller wishes to provide their own.

Signed-off-by: Daniel Mangum <[email protected]>
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  10. Add CID listener example 

    Adds an example for setting up a CID-enabled DTLS listener.

Signed-off-by: Daniel Mangum <[email protected]>
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  11. Add CID send only client example 

    Adds an example for a client that only sends connection IDs (i.e. does
not request to received them). This is the most common scenario for DTLS
clients.

Signed-off-by: Daniel Mangum <[email protected]>
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