fix: nil dereference in nowsh error messages

[oneirocosm]

This showed up when the domain socket request failed but the connection request did not. With this fixed, this case correctly enters nowsh mode.

[coderabbitai]

Walkthrough

The pull request introduces changes to the project's dependency management and error handling. In the go.mod file, the golang.org/x/mod module is transitioned from an indirect to a direct dependency, with version v0.22.0 being explicitly specified.

In the pkg/remote/conncontroller/conncontroller.go file, the connectInternal method of the SSHConn struct has been updated to improve error reporting. The modification allows for capturing and aggregating errors from both domain socket listener creation and connection server startup. This enhancement provides a more comprehensive error message by collecting multiple error scenarios into a single, informative error string stored in conn.WshError. The changes focus on improving error handling mechanisms without altering the fundamental functionality of the connection process.

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📜 Recent review details

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

📥 Commits

Reviewing files that changed from the base of the PR and between 4fd6d36 and c150595.

📒 Files selected for processing (2)

• go.mod (1 hunks)
• pkg/remote/conncontroller/conncontroller.go (1 hunks)

🔇 Additional comments (2)

pkg/remote/conncontroller/conncontroller.go (1)

556-565: Combine domain socket & conn server errors successfully.

This aggregation of errors into a single message helps avoid nil dereferences and provides clearer debugging details. The lock usage is also properly handled here.

go.mod (1)

29-29: Confirm necessity of direct dependency on golang.org/x/mod.

This change should be verified to ensure that it’s required as a direct dependency rather than indirect. If this module is used in critical functionalities, confirm compatibility and check for any security advisories.

✅ Verification successful

Direct dependency on golang.org/x/mod is justified

The codebase directly uses the semver package from golang.org/x/mod in two files:

• pkg/remote/connutil.go
• pkg/remote/conncontroller/conncontroller.go

Let's verify the actual usage to confirm it's not just an unused import:

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Direct dependency on golang.org/x/mod is necessary and properly used

The dependency is actively used in the codebase for semantic versioning operations:

• In pkg/remote/connutil.go for validating version strings using semver.IsValid()
• In pkg/remote/conncontroller/conncontroller.go for version comparison using semver.Compare()

These are critical version-checking functionalities that justify the direct dependency on golang.org/x/mod.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Search references to "golang.org/x/mod" to confirm direct usage in the codebase.

rg 'golang\.org/x/mod'

Length of output: 345

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Script:

#!/bin/bash
# Check the actual usage of the semver package
rg "semver\." -A 2 pkg/remote/

Length of output: 442

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