fix: hostname and proxy command generation

CHANGELOG.md

@@ -10,6 +10,10 @@
 
 - connections to the workspace are no longer established automatically after agent started with error.
 
+### Fixed
+
+- SSH connection will no longer fail with newer Coder deployments due to misconfiguration of hostname and proxy command.
+
 ## 0.1.5 - 2025-04-14
 
 ### Fixed

src/main/kotlin/com/coder/toolbox/CoderRemoteEnvironment.kt

@@ -48,6 +48,8 @@ class CoderRemoteEnvironment(
 
     override val actionsList: MutableStateFlow<List<ActionDescription>> = MutableStateFlow(getAvailableActions())
 
+    fun asPairOfWorkspaceAndAgent(): Pair<Workspace, WorkspaceAgent> = Pair(workspace, agent)
+
     private fun getAvailableActions(): List<ActionDescription> {
         val actions = mutableListOf(
             Action(context.i18n.ptrl("Open web terminal")) {

src/main/kotlin/com/coder/toolbox/CoderRemoteProvider.kt

@@ -109,7 +109,7 @@ class CoderRemoteProvider(
                 // Reconfigure if environments changed.
                 if (lastEnvironments.size != resolvedEnvironments.size || lastEnvironments != resolvedEnvironments) {
                     context.logger.info("Workspaces have changed, reconfiguring CLI: $resolvedEnvironments")
-                    cli.configSsh(resolvedEnvironments.map { it.name }.toSet())
+                    cli.configSsh(resolvedEnvironments.map { it.asPairOfWorkspaceAndAgent() }.toSet())
                 }
 
                 environments.update {
@@ -149,7 +149,7 @@ class CoderRemoteProvider(
                 triggerSshConfig.onReceive { shouldTrigger ->
                     if (shouldTrigger) {
                         context.logger.trace("workspace poller waked up because it should reconfigure the ssh configurations")
-                        cli.configSsh(lastEnvironments.map { it.name }.toSet())
+                        cli.configSsh(lastEnvironments.map { it.asPairOfWorkspaceAndAgent() }.toSet())
                     }
                 }
             }

src/main/kotlin/com/coder/toolbox/cli/CoderCLIManager.kt

@@ -223,11 +223,11 @@ class CoderCLIManager(
      * This can take supported features for testing purposes only.
      */
     fun configSsh(
-        workspaceNames: Set<String>,
+        wsWithAgents: Set<Pair<Workspace, WorkspaceAgent>>,
         feats: Features = features,
     ) {
         logger.info("Configuring SSH config at ${settings.sshConfigPath}")
-        writeSSHConfig(modifySSHConfig(readSSHConfig(), workspaceNames, feats))
+        writeSSHConfig(modifySSHConfig(readSSHConfig(), wsWithAgents, feats))
     }
 
     /**
@@ -249,13 +249,13 @@ class CoderCLIManager(
      */
     private fun modifySSHConfig(
         contents: String?,
-        workspaceNames: Set<String>,
+        wsWithAgents: Set<Pair<Workspace, WorkspaceAgent>>,
         feats: Features,
     ): String? {
         val host = deploymentURL.safeHost()
         val startBlock = "# --- START CODER JETBRAINS TOOLBOX $host"
         val endBlock = "# --- END CODER JETBRAINS TOOLBOX $host"
-        val isRemoving = workspaceNames.isEmpty()
+        val isRemoving = wsWithAgents.isEmpty()
         val baseArgs =
             listOfNotNull(
                 escape(localBinaryPath.toString()),
@@ -304,34 +304,39 @@ class CoderCLIManager(
                         .plus("\n\n")
                         .plus(
                             """
-                            Host ${getHostnamePrefix(deploymentURL)}-bg--*
+                            Host ${getBackgroundHostnamePrefix(deploymentURL)}--*
                               ProxyCommand ${backgroundProxyArgs.joinToString(" ")} --ssh-host-prefix ${
-                                getHostnamePrefix(
+                                getBackgroundHostnamePrefix(
                                     deploymentURL
                                 )
-                            }-bg-- %h
+                            }-- %h
                             """.trimIndent()
                                 .plus("\n" + options.prependIndent("  "))
                                 .plus(extraConfig),
                         ).replace("\n", System.lineSeparator()) +
                     System.lineSeparator() + endBlock
         } else {
-            workspaceNames.joinToString(
+            wsWithAgents.joinToString(
                 System.lineSeparator(),
                 startBlock + System.lineSeparator(),
                 System.lineSeparator() + endBlock,
                 transform = {
                     """
-                    Host ${getHostName(deploymentURL, it)}
-                      ProxyCommand ${proxyArgs.joinToString(" ")} $it
+                    Host ${getHostname(deploymentURL, it.workspace(), it.agent())}
+                      ProxyCommand ${proxyArgs.joinToString(" ")} ${getWsByOwner(it.workspace(), it.agent())}
                     """.trimIndent()
                         .plus("\n" + options.prependIndent("  "))
                         .plus(extraConfig)
                         .plus("\n")
                         .plus(
                             """
-                            Host ${getBackgroundHostName(deploymentURL, it)}
-                              ProxyCommand ${backgroundProxyArgs.joinToString(" ")} $it
+                            Host ${getBackgroundHostname(deploymentURL, it.workspace(), it.agent())}
+                              ProxyCommand ${backgroundProxyArgs.joinToString(" ")} ${
+                                getWsByOwner(
+                                    it.workspace(),
+                                    it.agent()
+                                )
+                            }
                             """.trimIndent()
                                 .plus("\n" + options.prependIndent("  "))
                                 .plus(extraConfig),
@@ -509,22 +514,25 @@ class CoderCLIManager(
     companion object {
         private val tokenRegex = "--token [^ ]+".toRegex()
 
-        fun getHostnamePrefix(url: URL): String = "coder-jetbrains-toolbox-${url.safeHost()}"
+        private fun getHostnamePrefix(url: URL): String = "coder-jetbrains-toolbox-${url.safeHost()}"
+
+        private fun getBackgroundHostnamePrefix(url: URL): String = "coder-jetbrains-toolbox-${url.safeHost()}-bg"
+
+        fun getWildcardHostname(url: URL, ws: Workspace, agent: WorkspaceAgent): String =
+            "${getHostnamePrefix(url)}--${ws.ownerName}--${ws.name}.${agent.name}"
 
-        fun getWildcardHostname(url: URL, workspace: Workspace, agent: WorkspaceAgent): String =
-            "${getHostnamePrefix(url)}-bg--${workspace.name}.${agent.name}"
+        fun getHostname(url: URL, ws: Workspace, agent: WorkspaceAgent): String {
+            return "coder-jetbrains-toolbox--${ws.ownerName}--${ws.name}.${agent.name}--${url.safeHost()}"
+        }
+
+        fun getBackgroundHostname(url: URL, ws: Workspace, agent: WorkspaceAgent): String {
+            return "${getHostname(url, ws, agent)}--bg"
+        }
 
-        fun getHostname(url: URL, workspace: Workspace, agent: WorkspaceAgent) =
-            getHostName(url, "${workspace.name}.${agent.name}")
+        private fun getWsByOwner(ws: Workspace, agent: WorkspaceAgent): String = "${ws.ownerName}/${ws.name}.${agent.name}"
 
-        fun getHostName(
-            url: URL,
-            workspaceName: String,
-        ): String = "coder-jetbrains-toolbox-$workspaceName--${url.safeHost()}"
+        private fun Pair<Workspace, WorkspaceAgent>.workspace() = this.first
 
-        fun getBackgroundHostName(
-            url: URL,
-            workspaceName: String,
-        ): String = getHostName(url, workspaceName) + "--bg"
+        private fun Pair<Workspace, WorkspaceAgent>.agent() = this.second
     }
 }

src/main/kotlin/com/coder/toolbox/sdk/CoderRestClient.kt

@@ -13,8 +13,10 @@ import com.coder.toolbox.sdk.v2.models.CreateWorkspaceBuildRequest
 import com.coder.toolbox.sdk.v2.models.Template
 import com.coder.toolbox.sdk.v2.models.User
 import com.coder.toolbox.sdk.v2.models.Workspace
+import com.coder.toolbox.sdk.v2.models.WorkspaceAgent
 import com.coder.toolbox.sdk.v2.models.WorkspaceBuild
 import com.coder.toolbox.sdk.v2.models.WorkspaceResource
+import com.coder.toolbox.sdk.v2.models.WorkspaceStatus
 import com.coder.toolbox.sdk.v2.models.WorkspaceTransition
 import com.coder.toolbox.util.CoderHostnameVerifier
 import com.coder.toolbox.util.coderSocketFactory
@@ -190,15 +192,17 @@ open class CoderRestClient(
     }
 
     /**
-     * Retrieves all the agent names for all workspaces, including those that
-     * are off.  Meant to be used when configuring SSH.
+     * Maps the list of workspaces to the associated agents.
      */
-    suspend fun agentNames(workspaces: List<Workspace>): Set<String> {
+    suspend fun groupByAgents(workspaces: List<Workspace>): Set<Pair<Workspace, WorkspaceAgent>> {
         // It is possible for there to be resources with duplicate names so we
         // need to use a set.
         return workspaces.flatMap { ws ->
-            resources(ws).filter { it.agents != null }.flatMap { it.agents!! }.map {
-                "${ws.name}.${it.name}"
+            when (ws.latestBuild.status) {
+                WorkspaceStatus.RUNNING -> ws.latestBuild.resources
+                else -> resources(ws)
+            }.filter { it.agents != null }.flatMap { it.agents!! }.map {
+                ws to it
             }
         }.toSet()
     }

src/main/kotlin/com/coder/toolbox/util/CoderProtocolHandler.kt

@@ -162,7 +162,7 @@ open class CoderProtocolHandler(
         }
 
         context.logger.info("Configuring Coder CLI...")
-        cli.configSsh(restClient.agentNames(workspaces))
+        cli.configSsh(restClient.groupByAgents(workspaces))
 
         if (shouldWaitForAutoLogin) {
             isInitialized.waitForTrue()

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

@@ -36,7 +36,7 @@ class EnvironmentView(
         /**
          * The username is ignored by the Coder proxy command.
          */
-        override val userName: String? = "coder"
+        override val userName: String? = null
 
     }