Specified IP addresses can be listened to to prevent risks caused by all-zero listening.

[five111]

Specified IP addresses can be listened to to prevent risks caused by all-zero listening.

Motivation:

When I used Nacos, I noticed that the jraft port was listening on all zeros. Upon reviewing the Nacos source code, I found that it passed an IP address when creating the jraft server, but sofa-jraft still opted to listen on all zeros, which could introduce some security risks.

Modification:

Determine whether the incoming endpoint contains an IP address. If it does, listen directly on that IP; otherwise, continue to listen on all interfaces with an IP address of 0.

Result:

Specified IP addresses can be listened to to prevent risks caused by all-zero listening.

Summary by CodeRabbit

• Refactor
  • Improved server creation logic to support binding gRPC servers to specific IP addresses and ports, enhancing network configuration flexibility without affecting user-facing features.

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Caution

Review failed

The pull request is closed.

Walkthrough

The implementation of gRPC server creation in GrpcRaftRpcFactory was updated to use a NettyServerBuilder with an InetSocketAddress, allowing for explicit specification of both IP address and port. The method signature and external API remain unchanged; only the internal logic for server instantiation was modified.

Changes

Cohort / File(s)	Change Summary
gRPC Server Instantiation Update jraft-extension/rpc-grpc-impl/src/main/java/com/alipay/sofa/jraft/rpc/impl/GrpcRaftRpcFactory.java	Refactored gRPC server creation to use NettyServerBuilder with InetSocketAddress for flexible binding.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~6 minutes

Poem

A server now listens with care,
On Netty’s strong socket, aware.
No longer just port, but IP too,
Makes binding more flexible for the crew.
With code refactored neat and tight,
The rabbits hop with pure delight! 🐇✨

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Reviewing files that changed from the base of the PR and between 2872997 and 8a89546.

📒 Files selected for processing (1)

• jraft-extension/rpc-grpc-impl/src/main/java/com/alipay/sofa/jraft/rpc/impl/GrpcRaftRpcFactory.java (2 hunks)

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Actionable comments posted: 1

📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between e86a950 and 2872997.

📒 Files selected for processing (1)

• jraft-extension/rpc-grpc-impl/src/main/java/com/alipay/sofa/jraft/rpc/impl/GrpcRaftRpcFactory.java (1 hunks)

⏰ Context from checks skipped due to timeout of 90000ms. You can increase the timeout in your CodeRabbit configuration to a maximum of 15 minutes (900000ms). (1)

• GitHub Check: sca

🔇 Additional comments (1)

jraft-extension/rpc-grpc-impl/src/main/java/com/alipay/sofa/jraft/rpc/impl/GrpcRaftRpcFactory.java (1)

91-93: Security improvement: Conditional IP binding logic is correct.

The implementation correctly addresses the security concern by:

• Binding to the specific IP address when endpoint.getIp() is not blank
• Using port-only binding when no specific IP is provided
• This prevents unintended exposure on all network interfaces (0.0.0.0)