fix: remote ide no longer reconnects after plugin upgrade (#167)

When the plugin is upgraded while JBClient is connected to a remote dev
server via the Coder SSH proxy/tunnel, the upgrade process kills and
re-establishes the SSH connection. However, JBClient/Toolbox fails to
detect the restored connection and reports "Toolbox: Target environment
com.coder.toolbox:bobiverse-bob.dev not found" error.

While digging into the Toolbox bytecode—specifically
`ClientOverSshTunnelConnector` — I realized the issue likely stems from
an incorrect equals implementation in our custom SSH connection info
object. In short, when a plugin upgrade terminates the SSH tunnel, the
connector’s monitoring logic correctly detects the lost connection and
waits. But when the SSH connection is re-established, the monitoring
logic fails to recognize it as a valid replacement, because equals is
still using the default `Object#equals` rather than a proper value-based
implementation.

Unfortunately, I wasn’t able to properly test this—specifically,
upgrading from a version without the fix to one that includes it—because
all Toolbox marketplace feeds are signed, preventing us from using a
tool like mitmproxy to serve a locally modified plugin version. Given
that, I propose releasing the change first and then performing the
upgrade test to confirm the fix.

- resolves #61

Author: fioan89

CHANGELOG.md

@@ -11,6 +11,10 @@
 - URL validation is stricter in the connection screen and URI protocol handler
 - support for verbose logging a sanitized version of the REST API request and responses
 
+### Fixed
+
+- remote IDE reconnects automatically after plugin upgrade
+
 ## 0.6.0 - 2025-07-25
 
 ### Changed

src/main/kotlin/com/coder/toolbox/views/EnvironmentView.kt

@@ -21,20 +21,51 @@ class EnvironmentView(
     private val workspace: Workspace,
     private val agent: WorkspaceAgent,
 ) : SshEnvironmentContentsView {
-    override suspend fun getConnectionInfo(): SshConnectionInfo = object : SshConnectionInfo {
-        /**
-         * The host name generated by the cli manager for this workspace.
-         */
-        override val host: String = cli.getHostname(url, workspace, agent)
-
-        /**
-         * The port is ignored by the Coder proxy command.
-         */
-        override val port: Int = 22
-
-        /**
-         * The username is ignored by the Coder proxy command.
-         */
-        override val userName: String? = null
+    override suspend fun getConnectionInfo(): SshConnectionInfo = WorkspaceSshConnectionInfo(url, cli, workspace, agent)
+}
+
+private class WorkspaceSshConnectionInfo(
+    url: URL,
+    cli: CoderCLIManager,
+    private val workspace: Workspace,
+    private val agent: WorkspaceAgent,
+) : SshConnectionInfo {
+    /**
+     * The host name generated by the cli manager for this workspace.
+     */
+    override val host: String = cli.getHostname(url, workspace, agent)
+
+    /**
+     * The port is ignored by the Coder proxy command.
+     */
+    override val port: Int = 22
+
+    /**
+     * The username is ignored by the Coder proxy command.
+     */
+    override val userName: String? = null
+
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (javaClass != other?.javaClass) return false
+
+        other as WorkspaceSshConnectionInfo
+
+        if (port != other.port) return false
+        if (workspace.name != other.workspace.name) return false
+        if (agent.name != other.agent.name) return false
+        if (host != other.host) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = port
+        result = 31 * result + workspace.name.hashCode()
+        result = 31 * result + agent.name.hashCode()
+        result = 31 * result + host.hashCode()
+        return result
     }
+
+
 }