Build uplink router

[thomas-bc]

F´ Version
Affected Component	Router

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Feature Description

Following #2763, build a router that sits after the Deframer and routes F´ packets to either FileUplink or CommandDispatcher

[LeStarch]

@thomas-bc done?

[thomas-bc]

@LeStarch the PR is open here: #2900

We should keep this issue open until we have merged that, which will require to add more tests to both components.

Also Josh had made the suggestion a while back that Router was quite a generic name. Thoughts on renaming to UplinkRouter, or any other suggestion?

[LeStarch]

UplinkRouter makes more sense!

[matt392code]

Suggested design for the UplinkRouter:
uplink-router.txt

Key design points:

1. Packet Type Detection:

• Router inspects incoming packet headers to determine type
• Uses clean separation between file and command packet handling
• Maintains distinct output ports for each packet type

2. Error Handling:

• Tracks dropped packets and routing statistics
• Reports routing errors through event system
• Preserves original packet data for debugging

3. Interface Compatibility:

• Uses Fw::Buffer for file packets (matching FileUplink)
• Uses Fw::ComBuffer for commands (matching CmdDispatcher)
• Maintains proper port types for each destination

4. Performance Considerations:

• Minimal copying of packet data
• Quick header inspection for routing decisions
• Efficient error reporting