fix: remote ide no longer reconnects after plugin upgrade

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.

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
     }
+
+
 }