STR-314: add Unix domain socket support for gRPC listener

[Ozodimgba]

Closes #STR-314

[Ozodimgba]

@leafaar is it cool to add the changelog for the parallel encoding here or the changelog must accompany its corresponding commit

[Copilot]

Pull request overview

This PR adds Unix domain socket (UDS) support for the gRPC listener, allowing clients to connect via unix:// addresses in addition to TCP addresses.

Changes:

• Introduced GrpcAddress enum to support both TCP and Unix domain socket addresses
• Modified gRPC server initialization to handle both TCP and UDS connection types
• Added warning when TLS is configured with Unix domain sockets

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 4 comments.

File	Description
yellowstone-grpc-geyser/src/config.rs	Adds GrpcAddress enum with TCP/Unix variants and custom deserialization for unix:// prefix
yellowstone-grpc-geyser/src/grpc.rs	Updates server binding logic to create appropriate listener based on address type and handle socket cleanup
CHANGELOG.md	Documents the new Unix domain socket feature

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[lvboudre]

@Ozodimgba Let's support multi-uds socket serving too please.
We will have at least 2 software listening over uds.

[lvboudre]

LGTM

[lvboudre]

@Ozodimgba I forgot about this, but can you add support for UDS connection inside the examples/rust/src/bin/client.rs file please?
This is a useful tool we used to quickly test locally.

[leafaar]

good, there is some stuff to change. also the client library needs a connect_uds method on GeyserGrpcBuilder, and the examples (add examples btw) need a way to accept unix:///path/to/socket as the endpoint string.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 8 comments.

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[lvboudre]

@Ozodimgba I need to the rust/examples/client to support this feature to properly test it on my end.

[lvboudre]

Do you need to pin this version?
Also, features should not be activated at the workspace but for package that actaully need it, in your case inside yellowstone-grpc-geyser/Cargo.toml.

[Ozodimgba]

okay noted, let me fix that real quick