Document possibility of configuring tls for a worker instance in instance_map

[MadLittleMods]

Document possibility of configuring tls for a worker instance in instance_map

synapse/synapse/config/workers.py

Lines 281 to 284 in ebc21a8

	# A map from instance name to host/port of their HTTP replication endpoint.
	# Check if the main process is declared. The main process itself doesn't need
	# this data as it would never have to talk to itself.
	instance_map: Dict[str, Any] = config.get("instance_map", {})

synapse/synapse/config/workers.py

Lines 330 to 336 in ebc21a8

	# type-ignore: the expression `Union[A, B]` is not a Type[Union[A, B]] currently
	self.instance_map: Dict[str, InstanceLocationConfig] = (
	parse_and_validate_mapping(
	instance_map,
	InstanceLocationConfig, # type: ignore[arg-type]
	)
	)

synapse/synapse/config/workers.py

Line 140 in ebc21a8

InstanceLocationConfig = Union[InstanceTcpLocationConfig, InstanceUnixLocationConfig]

synapse/synapse/config/workers.py

Lines 110 to 115 in ebc21a8

	class InstanceTcpLocationConfig(ConfigModel):
	"""The host and port to talk to an instance via HTTP replication."""
	host: StrictStr
	port: StrictInt
	tls: StrictBool = False

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[MadLittleMods]

I haven't tested to make sure this works 🤷

Seems like there is some related tests if you squint at tests/http/federation/test_matrix_federation_agent.py (at-least for internal matrix-federation:// traffic)