refactor(test): add centralized TypeScript server factory for integration tests (#477)

# refactor(test): add centralized TypeScript server factory for
integration tests

  - Create TypeScriptServer class for managing TypeScript MCP servers
  - Add dedicated typescript/ directory with server infrastructure
  - Refactor TsTestBase to use TypeScriptServer for stdio transport
- Extract TypeScript test tools (greet, multi-greet, prompts, resources)
  - Use npx tsx for direct execution (better performance than npm run)
  - Install TypeScript dependencies automatically in test setup

  The TypeScriptServer factory provides:
  - startSse(port): Start SSE transport server
  - startStdio(): Start STDIO transport server
  - stop(): Graceful server shutdown
  - installDependencies(): npm install automation

<!-- Provide a brief summary of your changes -->

## Motivation and Context
To resurrect typescript tests

## How Has This Been Tested?
Locally, CI

## Breaking Changes
<!-- Will users need to update their code or configurations? -->

## Types of changes
- [x] Bug fix (non-breaking change which fixes an issue)
- [x] Test fix

## Checklist
<!-- Go over all the following points, and put an `x` in all the boxes
that apply. -->
- [x] I have read the [MCP
Documentation](https://modelcontextprotocol.io)
- [x] My code follows the repository's style guidelines
- [x] New and existing tests pass locally
- [ ] I have added appropriate error handling
- [ ] I have added or updated documentation as needed

## Additional context
#475

.github/workflows/build.yml

@@ -41,7 +41,7 @@ jobs:
 
           - os: windows-latest
             job-name: "Windows Tests"
-            gradle-tasks: "jvmTest"
+            gradle-tasks: "jvmTest -x :integration-test:jvmTest"
             max-workers: 3
 
           - os: macos-latest
@@ -64,6 +64,11 @@ jobs:
         with:
           node-version: 'lts/*'
 
+      - name: Set up Node Packages
+        if: matrix.os == 'ubuntu-latest'
+        working-directory: integration-test/src/jvmTest/typescript
+        run: npm ci
+
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with:
@@ -75,7 +80,7 @@ jobs:
             caches
             notifications
             sdks
-            .konan/**
+            ../.konan/**
 
       - name: ${{ matrix.job-name }}
         run: |-
@@ -144,6 +149,11 @@ jobs:
         with:
           add-job-summary: 'always'
           cache-read-only: true
+          gradle-home-cache-includes: |
+            caches
+            notifications
+            sdks
+            ../.konan/**
 
       - name: Download Maven Local Repository
         uses: actions/download-artifact@v7

.github/workflows/conformance.yml

@@ -31,19 +31,24 @@ jobs:
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
-          node-version: '24.11.1'
+          node-version: 'lts/*'
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v5
         with:
           add-job-summary: 'always'
-          cache-read-only: true
+          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
+          gradle-home-cache-includes: |
+            caches
+            notifications
+            sdks
+            ../.konan/**
 
       - name: Run Conformance Tests
         run: ./gradlew --no-daemon :conformance-test:test
 
       - name: Upload Conformance Results
-        if: ${{ !cancelled() }}
+        if: always()
         uses: actions/upload-artifact@v6
         with:
           name: conformance-results

conformance-test/build.gradle.kts

@@ -6,8 +6,8 @@ plugins {
 
 dependencies {
     testImplementation(project(":kotlin-sdk"))
-    testImplementation(kotlin("test"))
     testImplementation(project(":test-utils"))
+    testImplementation(kotlin("test"))
     testImplementation(libs.kotlin.logging)
     testImplementation(libs.ktor.client.cio)
     testImplementation(libs.ktor.server.cio)

conformance-test/src/test/kotlin/io/modelcontextprotocol/kotlin/sdk/conformance/ConformanceTest.kt

@@ -1,6 +1,7 @@
 package io.modelcontextprotocol.kotlin.sdk.conformance
 
 import io.github.oshai.kotlinlogging.KotlinLogging
+import io.modelcontextprotocol.kotlin.test.utils.findFreePort
 import org.junit.jupiter.api.AfterAll
 import org.junit.jupiter.api.BeforeAll
 import org.junit.jupiter.api.DynamicTest
@@ -10,7 +11,6 @@ import java.io.BufferedReader
 import java.io.InputStreamReader
 import java.lang.management.ManagementFactory
 import java.net.HttpURLConnection
-import java.net.ServerSocket
 import java.net.URI
 import java.util.concurrent.TimeUnit
 import kotlin.properties.Delegates
@@ -70,8 +70,6 @@ class ConformanceTest {
         private const val GRACEFUL_SHUTDOWN_SECONDS = 5L
         private const val FORCE_SHUTDOWN_SECONDS = 2L
 
-        private fun findFreePort(): Int = ServerSocket(0).use { it.localPort }
-
         private fun getRuntimeClasspath(): String = ManagementFactory.getRuntimeMXBean().classPath
 
         private fun getTestClasspath(): String = System.getProperty("test.classpath") ?: getRuntimeClasspath()

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/AbstractKotlinClientTsServerTest.kt

@@ -17,7 +17,7 @@ abstract class AbstractKotlinClientTsServerTest : TsTestBase() {
     protected abstract suspend fun <T> useClient(block: suspend (Client) -> T): T
 
     @Test
-    @Timeout(30, unit = TimeUnit.SECONDS)
+    @Timeout(20, unit = TimeUnit.SECONDS)
     fun connectsAndPings() = runBlocking(Dispatchers.IO) {
         useClient { client ->
             assertNotNull(client, "Client should be initialized")
@@ -30,7 +30,7 @@ abstract class AbstractKotlinClientTsServerTest : TsTestBase() {
     }
 
     @Test
-    @Timeout(30, unit = TimeUnit.SECONDS)
+    @Timeout(20, unit = TimeUnit.SECONDS)
     fun listsTools() = runBlocking(Dispatchers.IO) {
         useClient { client ->
             val result = client.listTools()
@@ -44,7 +44,7 @@ abstract class AbstractKotlinClientTsServerTest : TsTestBase() {
     }
 
     @Test
-    @Timeout(30, unit = TimeUnit.SECONDS)
+    @Timeout(20, unit = TimeUnit.SECONDS)
     fun callGreet() = runBlocking(Dispatchers.IO) {
         useClient { client ->
             val testName = "TestUser"
@@ -59,7 +59,7 @@ abstract class AbstractKotlinClientTsServerTest : TsTestBase() {
     }
 
     @Test
-    @Timeout(30, unit = TimeUnit.SECONDS)
+    @Timeout(20, unit = TimeUnit.SECONDS)
     fun multipleClients() = runBlocking(Dispatchers.IO) {
         useClient { client1 ->
             useClient { client2 ->

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/TsTestBase.kt

@@ -11,59 +11,71 @@ import io.modelcontextprotocol.kotlin.sdk.server.Server
 import io.modelcontextprotocol.kotlin.sdk.server.StdioServerTransport
 import io.modelcontextprotocol.kotlin.sdk.types.Implementation
 import io.modelcontextprotocol.kotlin.test.utils.Retry
+import io.modelcontextprotocol.kotlin.test.utils.TypeScriptRunner
+import io.modelcontextprotocol.kotlin.test.utils.isWindows
 import kotlinx.coroutines.withTimeout
 import kotlinx.io.Sink
 import kotlinx.io.Source
 import kotlinx.io.asSink
 import kotlinx.io.asSource
 import kotlinx.io.buffered
-import org.awaitility.kotlin.await
 import org.junit.jupiter.api.BeforeAll
 import java.io.BufferedReader
 import java.io.File
 import java.io.InputStreamReader
-import java.net.ServerSocket
-import java.net.Socket
 import java.util.concurrent.TimeUnit
 import kotlin.io.path.createTempDirectory
 import kotlin.time.Duration.Companion.seconds
 
-enum class TransportKind { SSE, STDIO, DEFAULT }
+enum class TransportKind { SSE, STDIO }
 
 @Retry(times = 3)
 abstract class TsTestBase {
 
-    protected open val transportKind: TransportKind = TransportKind.DEFAULT
+    protected abstract val transportKind: TransportKind
 
-    protected val projectRoot: File get() = File(System.getProperty("user.dir"))
+    companion object {
-    protected val tsClientDir: File
+        @JvmStatic
-        get() {
+        protected val projectRoot: File get() = File(System.getProperty("user.dir"))
-            val base = File(
+
+        @JvmStatic
+        protected val tsClientDir: File
+            get() = File(projectRoot, "src/jvmTest/typescript")
+
+        @JvmStatic
+        protected val tsSourceDir: File
+            get() = File(
                 projectRoot,
                 "src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript",
             )
 
-            // Allow override via system property for CI: -Dts.transport=stdio|sse
+        @JvmStatic
-            val fromProp = System.getProperty("ts.transport")?.lowercase()
+        private var sharedSseServer: Process? = null
-            val overrideSubDir = when (fromProp) {
-                "stdio" -> "stdio"
-                "sse" -> "sse"
-                else -> null
-            }
 
-            val subDirName = overrideSubDir ?: when (transportKind) {
+        @JvmStatic
-                TransportKind.STDIO -> "stdio"
+        private var sharedSsePort: Int = 0
-                TransportKind.SSE -> "sse"
+
-                TransportKind.DEFAULT -> null
+        @JvmStatic
+        @Synchronized
+        protected fun getSharedSseUrl(): String {
+            if (sharedSseServer == null || !sharedSseServer!!.isAlive) {
+                sharedSsePort = io.modelcontextprotocol.kotlin.test.utils.findFreePort()
+                val server = TypeScriptServer(tsClientDir)
+                sharedSseServer = server.startSse(sharedSsePort)
+                println("Shared TypeScript SSE server started on port $sharedSsePort")
+
+                Runtime.getRuntime().addShutdownHook(
+                    Thread {
+                        sharedSseServer?.let {
+                            println("Stopping shared TypeScript SSE server")
+                            io.modelcontextprotocol.kotlin.test.utils.stopProcess(it)
+                        }
+                    },
+                )
             }
-            if (subDirName != null) {
+            return "http://localhost:$sharedSsePort/mcp"
-                val sub = File(base, subDirName)
-                if (sub.exists()) return sub
-            }
-            return base
         }
 
-    companion object {
         @JvmStatic
         private val tempRootDir: File = createTempDirectory("typescript-sdk-").toFile().apply { deleteOnExit() }
 
@@ -72,6 +84,7 @@ abstract class TsTestBase {
 
         @JvmStatic
         @BeforeAll
+        @Deprecated("Use setupTypeScriptSdkWithDependencies instead")
         fun setupTypeScriptSdk() {
             println("Cloning TypeScript SDK repository")
 
@@ -87,32 +100,43 @@ abstract class TsTestBase {
                     .redirectErrorStream(true)
                     .start()
                 val exitCode = process.waitFor()
-                if (exitCode != 0) {
+                require(exitCode == 0) {
-                    throw RuntimeException("Failed to clone TypeScript SDK repository: exit code $exitCode")
+                    "Failed to clone TypeScript SDK repository: exit code $exitCode"
                 }
             }
 
             println("Installing TypeScript SDK dependencies")
-            executeCommand("npm install", sdkDir, allowFailure = false, timeoutSeconds = null)
+            val npmInstallResult = executeCommand("npm install", sdkDir, allowFailure = true, timeoutSeconds = null)
+            if (npmInstallResult.contains("EUNSUPPORTEDPROTOCOL") || npmInstallResult.contains("catalog:")) {
+                println("npm install failed due to catalog protocol. Trying pnpm...")
+                try {
+                    // Try to use npx pnpm to ensure it's available
+                    executeCommand("npx pnpm install", sdkDir, allowFailure = false, timeoutSeconds = null)
+                } catch (e: Exception) {
+                    println("pnpm install failed or not found: ${e.message}")
+                    println("Attempting to patch package.json to remove catalog: protocol and use npm")
+                    patchPackageJson(sdkDir)
+                    // Also patch other package.json files in the workspace if they exist
+                    sdkDir.walk().filter { it.name == "package.json" }.forEach { patchPackageJson(it.parentFile) }
+                    executeCommand("npm install", sdkDir, allowFailure = false, timeoutSeconds = null)
+                }
+            }
         }
 
-        @JvmStatic
+        @Deprecated("never patch package.json")
-        protected fun killProcessOnPort(port: Int) {
+        private fun patchPackageJson(dir: File) {
-            val isWindows = System.getProperty("os.name").lowercase().contains("windows")
+            val packageJson = File(dir, "package.json")
-            val killCommand = if (isWindows) {
+            if (!packageJson.exists()) return
-                "netstat -ano | findstr :$port | for /f \"tokens=5\" %a in ('more')" +
+            var content = packageJson.readText()
-                    " do taskkill /F /PID %a 2>nul || echo No process found"
+            // Replace "catalog:something" with "*" or a reasonable default if we knew it.
-            } else {
+            // Since we don't know the exact versions in the catalog, "*" is a risky but possible fallback for tests.
-                "lsof -ti:$port | xargs kill -9 2>/dev/null || true"
+            // However, a better approach is to use pnpm if available.
-            }
+            content = content.replace(Regex(""""catalog:[^"]*""""), "\"*\"")
-            executeCommand(killCommand, File("."), allowFailure = true, timeoutSeconds = null)
+            // Also replace workspace: protocol if we are using npm fallback
-        }
+            content = content.replace(Regex(""""workspace:[^"]*""""), "\"*\"")
-
+            // And any other unsupported protocols that might be in the package.json
-        @JvmStatic
+            content = content.replace(Regex(""""link:[^"]*""""), "\"*\"")
-        protected fun findFreePort(): Int {
+            packageJson.writeText(content)
-            ServerSocket(0).use { socket ->
-                return socket.localPort
-            }
         }
 
         @JvmStatic
@@ -132,7 +156,6 @@ abstract class TsTestBase {
                 throw RuntimeException("Working directory is not accessible: ${workingDir.absolutePath}")
             }
 
-            val isWindows = System.getProperty("os.name").lowercase().contains("windows")
             val processBuilder = if (isWindows) {
                 ProcessBuilder()
                     .command("cmd.exe", "/c", "set TYPESCRIPT_SDK_DIR=${sdkDir.absolutePath} && $command")
@@ -157,11 +180,9 @@ abstract class TsTestBase {
 
             if (timeoutSeconds == null) {
                 val exitCode = process.waitFor()
-                if (!allowFailure && exitCode != 0) {
+                require(allowFailure || exitCode == 0) {
-                    throw RuntimeException(
+                    "Command execution failed with exit code $exitCode: $command\n" +
-                        "Command execution failed with exit code $exitCode: $command\n" +
+                        "Working dir: ${workingDir.absolutePath}\nOutput:\n$output"
-                            "Working dir: ${workingDir.absolutePath}\nOutput:\n$output",
-                    )
                 }
             } else {
                 process.waitFor(timeoutSeconds, TimeUnit.SECONDS)
@@ -172,114 +193,24 @@ abstract class TsTestBase {
     }
 
     private fun waitForProcessTermination(process: Process, timeoutSeconds: Long): Boolean {
-        if (process.isAlive && !process.waitFor(timeoutSeconds, TimeUnit.SECONDS)) {
+        io.modelcontextprotocol.kotlin.test.utils.stopProcess(process)
-            process.destroyForcibly()
-            process.waitFor(2, TimeUnit.SECONDS)
-            return false
-        }
         return true
     }
 
-    private fun createProcessOutputReader(process: Process, prefix: String = "TS-SERVER"): Thread {
+    protected fun waitForPort(host: String = "localhost", port: Int, timeoutSeconds: Long = 10): Boolean =
-        val outputReader = Thread {
+        io.modelcontextprotocol.kotlin.test.utils.waitForPort(host, port, timeoutSeconds)
-            try {
-                process.inputStream.bufferedReader().useLines { lines ->
-                    for (line in lines) {
-                        println("[$prefix] $line")
-                    }
-                }
-            } catch (e: Exception) {
-                println("Warning: Error reading process output: ${e.message}")
-            }
-        }
-        outputReader.isDaemon = true
-        return outputReader
-    }
-
-    private fun createProcessErrorReader(process: Process, prefix: String = "TS-SERVER"): Thread {
-        val errorReader = Thread {
-            try {
-                process.errorStream.bufferedReader().useLines { lines ->
-                    for (line in lines) {
-                        println("[$prefix][err] $line")
-                    }
-                }
-            } catch (e: Exception) {
-                println("Warning: Error reading process error stream: ${e.message}")
-            }
-        }
-        errorReader.isDaemon = true
-        return errorReader
-    }
-
-    protected fun waitForPort(host: String = "localhost", port: Int, timeoutSeconds: Long = 10): Boolean = try {
-        await.atMost(timeoutSeconds, TimeUnit.SECONDS)
-            .pollDelay(200, TimeUnit.MILLISECONDS)
-            .pollInterval(100, TimeUnit.MILLISECONDS)
-            .until {
-                try {
-                    Socket(host, port).use { true }
-                } catch (_: Exception) {
-                    false
-                }
-            }
-        true
-    } catch (_: Exception) {
-        false
-    }
 
     protected fun executeCommandAllowingFailure(command: String, workingDir: File, timeoutSeconds: Long = 20): String =
         executeCommand(command, workingDir, allowFailure = true, timeoutSeconds = timeoutSeconds)
 
     protected fun startTypeScriptServer(port: Int): Process {
-        killProcessOnPort(port)
+        val server = TypeScriptServer(tsClientDir)
-
+        return server.startSse(port)
-        if (!sdkDir.exists() || !sdkDir.isDirectory) {
-            throw IllegalStateException(
-                "TypeScript SDK directory does not exist or is not accessible: ${sdkDir.absolutePath}",
-            )
-        }
-
-        val isWindows = System.getProperty("os.name").lowercase().contains("windows")
-        val localServerPath = File(tsClientDir, "simpleStreamableHttp.ts").absolutePath
-        val processBuilder = if (isWindows) {
-            ProcessBuilder()
-                .command(
-                    "cmd.exe",
-                    "/c",
-                    "set MCP_PORT=$port && set NODE_PATH=${sdkDir.absolutePath}\\node_modules && npx --prefix \"${sdkDir.absolutePath}\" tsx \"$localServerPath\"",
-                )
-        } else {
-            ProcessBuilder()
-                .command(
-                    "bash",
-                    "-c",
-                    "MCP_PORT=$port NODE_PATH='${sdkDir.absolutePath}/node_modules' npx --prefix '${sdkDir.absolutePath}' tsx \"$localServerPath\"",
-                )
-        }
-
-        processBuilder.environment()["TYPESCRIPT_SDK_DIR"] = sdkDir.absolutePath
-
-        val process = processBuilder
-            .directory(tsClientDir)
-            .redirectErrorStream(true)
-            .start()
-
-        createProcessOutputReader(process).start()
-
-        if (!waitForPort(port = port, timeoutSeconds = 20)) {
-            throw IllegalStateException("TypeScript server did not become ready on localhost:$port within timeout")
-        }
-        return process
     }
 
     protected fun stopProcess(process: Process, waitSeconds: Long = 3, name: String = "TypeScript server") {
-        process.destroy()
+        io.modelcontextprotocol.kotlin.test.utils.stopProcess(process)
-        if (waitForProcessTermination(process, waitSeconds)) {
+        println("$name stopped")
-            println("$name stopped gracefully")
-        } else {
-            println("$name did not stop gracefully, forced termination")
-        }
     }
 
     // ===== SSE client helpers =====
@@ -301,41 +232,8 @@ abstract class TsTestBase {
 
     // ===== STDIO client + server helpers =====
     protected fun startTypeScriptServerStdio(): Process {
-        if (!sdkDir.exists() || !sdkDir.isDirectory) {
+        val server = TypeScriptServer(tsClientDir)
-            throw IllegalStateException(
+        return server.startStdio()
-                "TypeScript SDK directory does not exist or is not accessible: ${sdkDir.absolutePath}",
-            )
-        }
-        val isWindows = System.getProperty("os.name").lowercase().contains("windows")
-        val localServerPath = File(tsClientDir, "simpleStdio.ts").absolutePath
-        val processBuilder = if (isWindows) {
-            ProcessBuilder()
-                .command(
-                    "cmd.exe",
-                    "/c",
-                    "set NODE_PATH=${sdkDir.absolutePath}\\node_modules && npx --prefix \"${sdkDir.absolutePath}\" tsx \"$localServerPath\"",
-                )
-        } else {
-            ProcessBuilder()
-                .command(
-                    "bash",
-                    "-c",
-                    "NODE_PATH='${sdkDir.absolutePath}/node_modules' npx --prefix '${sdkDir.absolutePath}' tsx \"$localServerPath\"",
-                )
-        }
-        processBuilder.environment()["TYPESCRIPT_SDK_DIR"] = sdkDir.absolutePath
-        val process = processBuilder
-            .directory(tsClientDir)
-            .redirectErrorStream(false)
-            .start()
-        // For stdio transports, do NOT read from stdout (it's used for protocol). Read stderr for logs only.
-        createProcessErrorReader(process, prefix = "TS-SERVER-STDIO").start()
-        // Give the process a moment to start
-        await.atMost(2, TimeUnit.SECONDS)
-            .pollDelay(200, TimeUnit.MILLISECONDS)
-            .pollInterval(100, TimeUnit.MILLISECONDS)
-            .until { process.isAlive }
-        return process
     }
 
     protected suspend fun newClientStdio(process: Process): Client {
@@ -367,40 +265,20 @@ abstract class TsTestBase {
     // ===== Helpers to run TypeScript client over STDIO against Kotlin server over STDIO =====
     protected fun runStdioClient(vararg args: String): String {
         // Start Node stdio client (it will speak MCP over its stdout/stdin)
-        val isWindows = System.getProperty("os.name").lowercase().contains("windows")
+        val subDirName = when (transportKind) {
-        val clientPath = File(tsClientDir, "myClient.ts").absolutePath
+            TransportKind.STDIO -> "stdio"
-
+            TransportKind.SSE -> "sse"
-        val process = if (isWindows) {
-            ProcessBuilder()
-                .command(
-                    "cmd.exe",
-                    "/c",
-                    (
-                        "set TYPESCRIPT_SDK_DIR=${sdkDir.absolutePath} && " +
-                            "set NODE_PATH=${sdkDir.absolutePath}\\node_modules && " +
-                            "npx --prefix \"${sdkDir.absolutePath}\" tsx \"$clientPath\" " +
-                            args.joinToString(" ")
-                        ),
-                )
-                .directory(tsClientDir)
-                .redirectErrorStream(false)
-                .start()
-        } else {
-            ProcessBuilder()
-                .command(
-                    "bash",
-                    "-c",
-                    (
-                        "TYPESCRIPT_SDK_DIR='${sdkDir.absolutePath}' " +
-                            "NODE_PATH='${sdkDir.absolutePath}/node_modules' " +
-                            "npx --prefix '${sdkDir.absolutePath}' tsx \"$clientPath\" " +
-                            args.joinToString(" ")
-                        ),
-                )
-                .directory(tsClientDir)
-                .redirectErrorStream(false)
-                .start()
         }
+        val clientPath = File(tsSourceDir, "$subDirName/myClient.ts").absolutePath
+
+        val process = TypeScriptRunner.run(
+            typescriptDir = tsClientDir,
+            scriptPath = clientPath,
+            arguments = args.toList(),
+            env = mapOf("TYPESCRIPT_SDK_DIR" to sdkDir.absolutePath),
+            redirectErrorStream = false,
+            logPrefix = "TS-CLIENT-STDIO",
+        )
 
         // Create Kotlin server and attach stdio transport to the process streams
         val server: Server = KotlinServerForTsClient().createMcpServer()

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/TypeScriptServer.kt

@@ -0,0 +1,121 @@
+package io.modelcontextprotocol.kotlin.sdk.integration.typescript
+
+import io.modelcontextprotocol.kotlin.test.utils.TypeScriptRunner
+import io.modelcontextprotocol.kotlin.test.utils.killProcessOnPort
+import io.modelcontextprotocol.kotlin.test.utils.stopProcess
+import io.modelcontextprotocol.kotlin.test.utils.waitForPort
+import org.awaitility.kotlin.await
+import java.io.File
+import java.util.concurrent.TimeUnit
+
+/**
+ * Factory class for starting and managing TypeScript MCP servers for integration tests.
+ *
+ * This class provides methods to:
+ * - Start TypeScript servers using SSE or STDIO transports via npx tsx
+ * - Install npm dependencies in the TypeScript test directory
+ * - Manage server lifecycle (start/stop)
+ * - Handle port management and process cleanup
+ *
+ * The servers are started using npx tsx to execute TypeScript files directly:
+ * - `npx tsx server/stdio-server.ts` for STDIO transport
+ * - `npx tsx server/sse-server.ts` for SSE transport
+ *
+ * Usage:
+ * ```kotlin
+ * val typescriptDir = File("kotlin-sdk-test/src/jvmTest/typescript")
+ * val server = TypeScriptServer(typescriptDir)
+ *
+ * // Start SSE server
+ * val port = TypeScriptServer.findFreePort()
+ * val process = server.startSse(port)
+ *
+ * // Stop server
+ * server.stop()
+ * ```
+ */
+class TypeScriptServer(private val typescriptDir: File) {
+    private var process: Process? = null
+
+    /**
+     * Starts a TypeScript MCP server using SSE transport.
+     *
+     * @param port The port number to bind the SSE server to
+     * @return The started Process
+     * @throws IllegalStateException if the server fails to start within timeout
+     */
+    fun startSse(port: Int): Process {
+        killProcessOnPort(port)
+        val serverPath = File(typescriptDir, "server/sse-server.ts").absolutePath
+        val proc = TypeScriptRunner.run(
+            typescriptDir = typescriptDir,
+            scriptPath = serverPath,
+            env = mapOf("MCP_PORT" to port.toString()),
+            redirectErrorStream = true,
+            logPrefix = "TS-SERVER-SSE",
+        )
+        process = proc
+
+        check(waitForPort(port = port, timeoutSeconds = 10)) {
+            proc.destroyForcibly()
+            "TypeScript SSE server did not become ready on localhost:$port within timeout"
+        }
+        return proc
+    }
+
+    /**
+     * Starts a TypeScript MCP server using STDIO transport.
+     *
+     * @return The started Process
+     */
+    fun startStdio(): Process {
+        val serverPath = File(typescriptDir, "server/stdio-server.ts").absolutePath
+        val proc = TypeScriptRunner.run(
+            typescriptDir = typescriptDir,
+            scriptPath = serverPath,
+            redirectErrorStream = false,
+            logPrefix = "TS-SERVER-STDIO",
+        )
+        process = proc
+
+        await.atMost(5, TimeUnit.SECONDS)
+            .pollDelay(200, TimeUnit.MILLISECONDS)
+            .pollInterval(100, TimeUnit.MILLISECONDS)
+            .until { proc.isAlive }
+
+        return proc
+    }
+
+    /**
+     * Stops the currently running server process.
+     *
+     * Attempts graceful shutdown first, then forces termination if necessary.
+     */
+    fun stop() {
+        process?.let {
+            stopProcess(it)
+        }
+        process = null
+    }
+
+    companion object {
+        /**
+         * Installs npm dependencies in the specified TypeScript directory.
+         *
+         * @param typescriptDir The directory containing package.json
+         * @throws RuntimeException if npm install fails
+         */
+        @JvmStatic
+        fun installDependencies(typescriptDir: File) {
+            TypeScriptRunner.installDependencies(typescriptDir)
+        }
+
+        /**
+         * Finds an available port by opening and closing a ServerSocket.
+         *
+         * @return An available port number
+         */
+        @JvmStatic
+        fun findFreePort(): Int = io.modelcontextprotocol.kotlin.test.utils.findFreePort()
+    }
+}

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/KotlinClientTsServerEdgeCasesTestSse.kt

@@ -4,7 +4,6 @@ import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TsTestBase
 import io.modelcontextprotocol.kotlin.sdk.types.TextContent
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
@@ -14,7 +13,6 @@ import kotlinx.coroutines.withTimeout
 import kotlinx.serialization.json.JsonObject
 import kotlinx.serialization.json.JsonPrimitive
 import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.Timeout
 import java.util.concurrent.TimeUnit
@@ -23,25 +21,14 @@ import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 import kotlin.time.Duration.Companion.seconds
 
-@DisabledOnCI
 class KotlinClientTsServerEdgeCasesTestSse : TsTestBase() {
 
     override val transportKind = TransportKind.SSE
 
-    private var port: Int = 0
     private val host = "localhost"
-    private lateinit var serverUrl: String
+    private val serverUrl: String by lazy { getSharedSseUrl() }
 
     private lateinit var client: Client
-    private lateinit var tsServerProcess: Process
-
-    @BeforeEach
-    fun setUp() {
-        port = findFreePort()
-        serverUrl = "http://$host:$port/mcp"
-        tsServerProcess = startTypeScriptServer(port)
-        println("TypeScript server started on port $port")
-    }
 
     @AfterEach
     fun tearDown() {
@@ -56,15 +43,6 @@ class KotlinClientTsServerEdgeCasesTestSse : TsTestBase() {
                 println("Warning: Error during client close: ${e.message}")
             }
         }
-
-        if (::tsServerProcess.isInitialized) {
-            try {
-                println("Stopping TypeScript server")
-                stopProcess(tsServerProcess)
-            } catch (e: Exception) {
-                println("Warning: Error during TypeScript server stop: ${e.message}")
-            }
-        }
     }
 
     @Test

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/KotlinClientTsServerTestSse.kt

@@ -3,41 +3,14 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.sse
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.AbstractKotlinClientTsServerTest
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.withTimeout
-import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.BeforeEach
 import kotlin.time.Duration.Companion.seconds
 
-@DisabledOnCI
 class KotlinClientTsServerTestSse : AbstractKotlinClientTsServerTest() {
-
     override val transportKind = TransportKind.SSE
 
-    private var port: Int = 0
     private val host = "localhost"
-    private lateinit var serverUrl: String
+    private val serverUrl: String by lazy { getSharedSseUrl() }
-    private lateinit var tsServerProcess: Process
-
-    @BeforeEach
-    fun setUpSse() {
-        port = findFreePort()
-        serverUrl = "http://$host:$port/mcp"
-        tsServerProcess = startTypeScriptServer(port)
-        println("TypeScript server started on port $port")
-    }
-
-    @AfterEach
-    fun tearDownSse() {
-        if (::tsServerProcess.isInitialized) {
-            try {
-                println("Stopping TypeScript server")
-                stopProcess(tsServerProcess)
-            } catch (e: Exception) {
-                println("Warning: Error during TypeScript server stop: ${e.message}")
-            }
-        }
-    }
 
     override suspend fun <T> useClient(block: suspend (Client) -> T): T = withClient(serverUrl) { client ->
         try {

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/OldSchemaKotlinClientTsServerEdgeCasesTestSse.kt

@@ -4,7 +4,6 @@ import io.modelcontextprotocol.kotlin.sdk.TextContent
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TsTestBase
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
@@ -14,7 +13,6 @@ import kotlinx.coroutines.withTimeout
 import kotlinx.serialization.json.JsonObject
 import kotlinx.serialization.json.JsonPrimitive
 import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.BeforeEach
 import org.junit.jupiter.api.Test
 import org.junit.jupiter.api.Timeout
 import java.util.concurrent.TimeUnit
@@ -23,25 +21,14 @@ import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 import kotlin.time.Duration.Companion.seconds
 
-@DisabledOnCI
 class OldSchemaKotlinClientTsServerEdgeCasesTestSse : TsTestBase() {
 
     override val transportKind = TransportKind.SSE
 
-    private var port: Int = 0
     private val host = "localhost"
-    private lateinit var serverUrl: String
+    private val serverUrl: String by lazy { getSharedSseUrl() }
 
     private lateinit var client: Client
-    private lateinit var tsServerProcess: Process
-
-    @BeforeEach
-    fun setUp() {
-        port = findFreePort()
-        serverUrl = "http://$host:$port/mcp"
-        tsServerProcess = startTypeScriptServer(port)
-        println("TypeScript server started on port $port")
-    }
 
     @AfterEach
     fun tearDown() {
@@ -56,15 +43,6 @@ class OldSchemaKotlinClientTsServerEdgeCasesTestSse : TsTestBase() {
                 println("Warning: Error during client close: ${e.message}")
             }
         }
-
-        if (::tsServerProcess.isInitialized) {
-            try {
-                println("Stopping TypeScript server")
-                stopProcess(tsServerProcess)
-            } catch (e: Exception) {
-                println("Warning: Error during TypeScript server stop: ${e.message}")
-            }
-        }
     }
 
     @Test

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/OldSchemaKotlinClientTsServerTestSse.kt

@@ -3,41 +3,15 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.sse
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.OldSchemaAbstractKotlinClientTsServerTest
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.withTimeout
-import org.junit.jupiter.api.AfterEach
-import org.junit.jupiter.api.BeforeEach
 import kotlin.time.Duration.Companion.seconds
 
-@DisabledOnCI
 class OldSchemaKotlinClientTsServerTestSse : OldSchemaAbstractKotlinClientTsServerTest() {
 
     override val transportKind = TransportKind.SSE
 
-    private var port: Int = 0
     private val host = "localhost"
-    private lateinit var serverUrl: String
+    private val serverUrl: String by lazy { getSharedSseUrl() }
-    private lateinit var tsServerProcess: Process
-
-    @BeforeEach
-    fun setUpSse() {
-        port = findFreePort()
-        serverUrl = "http://$host:$port/mcp"
-        tsServerProcess = startTypeScriptServer(port)
-        println("TypeScript server started on port $port")
-    }
-
-    @AfterEach
-    fun tearDownSse() {
-        if (::tsServerProcess.isInitialized) {
-            try {
-                println("Stopping TypeScript server")
-                stopProcess(tsServerProcess)
-            } catch (e: Exception) {
-                println("Warning: Error during TypeScript server stop: ${e.message}")
-            }
-        }
-    }
 
     override suspend fun <T> useClient(block: suspend (Client) -> T): T = withClient(serverUrl) { client ->
         try {

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/TsClientKotlinServerTestSse.kt

@@ -3,6 +3,8 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.sse
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.AbstractTsClientKotlinServerTest
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
+import io.modelcontextprotocol.kotlin.test.utils.findFreePort
+import io.modelcontextprotocol.kotlin.test.utils.killProcessOnPort
 import org.junit.jupiter.api.AfterEach
 import org.junit.jupiter.api.BeforeEach
 

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/TsEdgeCasesTestSse.kt

@@ -3,6 +3,8 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.sse
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TsTestBase
 import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
+import io.modelcontextprotocol.kotlin.test.utils.findFreePort
+import io.modelcontextprotocol.kotlin.test.utils.killProcessOnPort
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
 import kotlinx.coroutines.coroutineScope
@@ -35,8 +37,8 @@ class TsEdgeCasesTestSse : TsTestBase() {
         killProcessOnPort(port)
         httpServer = KotlinServerForTsClient()
         httpServer?.start(port)
-        if (!waitForPort(port = port)) {
+        check(waitForPort(port = port)) {
-            throw IllegalStateException("Kotlin test server did not become ready on localhost:$port within timeout")
+            "Kotlin test server did not become ready on localhost:$port within timeout"
         }
         println("Kotlin server started on port $port")
     }

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/myClient.ts

@@ -17,8 +17,8 @@ async function main() {
         const path = await import('path');
         // @ts-ignore
         const { pathToFileURL } = await import('url');
-        const clientUrl = pathToFileURL(path.join(sdkDir, 'src', 'client', 'index.ts')).href;
+        const clientUrl = pathToFileURL(path.join(sdkDir, 'packages', 'client', 'src', 'index.ts')).href;
-        const streamUrl = pathToFileURL(path.join(sdkDir, 'src', 'client', 'streamableHttp.js')).href;
+        const streamUrl = pathToFileURL(path.join(sdkDir, 'packages', 'client', 'src', 'streamableHttp.ts')).href;
         // @ts-ignore
         ({ Client } = await import(clientUrl));
         // @ts-ignore

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/sse/simpleStreamableHttp.ts

@@ -1,701 +0,0 @@
-// @ts-nocheck
-import express, {Request, Response} from 'express';
-import {randomUUID} from 'node:crypto';
-import {z} from 'zod';
-import cors from 'cors';
-import path from 'node:path';
-import {pathToFileURL} from 'node:url';
-
-const SDK_DIR = process.env.TYPESCRIPT_SDK_DIR;
-if (!SDK_DIR) {
-    throw new Error('TYPESCRIPT_SDK_DIR environment variable is not set. It should point to the cloned typescript-sdk directory.');
-}
-
-async function importFromSdk<T = any>(rel: string): Promise<T> {
-    const full = path.resolve(SDK_DIR!, rel);
-    const url = pathToFileURL(full).href;
-    return (await import(url)) as unknown as T;
-}
-
-async function main() {
-    const {McpServer} = await importFromSdk<any>('src/server/mcp.ts');
-    const {StreamableHTTPServerTransport} = await importFromSdk<any>('src/server/streamableHttp.ts');
-    const {
-        getOAuthProtectedResourceMetadataUrl,
-        mcpAuthMetadataRouter
-    } = await importFromSdk<any>('src/server/auth/router.ts');
-    const {requireBearerAuth} = await importFromSdk<any>('src/server/auth/middleware/bearerAuth.ts');
-    const {
-        isInitializeRequest,
-    } = await importFromSdk<any>('src/types.ts');
-    const {InMemoryEventStore} = await importFromSdk<any>('src/examples/shared/inMemoryEventStore.ts');
-    const {setupAuthServer} = await importFromSdk<any>('src/examples/server/demoInMemoryOAuthProvider.ts');
-    const {checkResourceAllowed} = await importFromSdk<any>('src/shared/auth-utils.ts');
-
-    // Check for OAuth flag
-    const useOAuth = process.argv.includes('--oauth');
-    const strictOAuth = process.argv.includes('--oauth-strict');
-
-// Create an MCP server with implementation details
-    const getServer = () => {
-        const server = new McpServer({
-            name: 'simple-streamable-http-server',
-            version: '1.0.0'
-        }, {capabilities: {logging: {}}});
-
-        // Register a simple tool that returns a greeting
-        server.registerTool(
-            'greet',
-            {
-                title: 'Greeting Tool',  // Display name for UI
-                description: 'A simple greeting tool',
-                inputSchema: {
-                    name: z.string().describe('Name to greet'),
-                },
-            },
-            async ({name}): Promise<CallToolResult> => {
-                return {
-                    content: [
-                        {
-                            type: 'text',
-                            text: `Hello, ${name}!`,
-                        },
-                    ],
-                };
-            }
-        );
-
-        // Register a tool that sends multiple greetings with notifications (with annotations)
-        server.tool(
-            'multi-greet',
-            'A tool that sends different greetings with delays between them',
-            {
-                name: z.string().describe('Name to greet'),
-            },
-            {
-                title: 'Multiple Greeting Tool',
-                readOnlyHint: true,
-                openWorldHint: false
-            },
-            async ({name}, extra): Promise<CallToolResult> => {
-                const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
-
-                await server.sendLoggingMessage({
-                    level: "debug",
-                    data: `Starting multi-greet for ${name}`
-                }, extra.sessionId);
-
-                await sleep(1000); // Wait 1 second before first greeting
-
-                await server.sendLoggingMessage({
-                    level: "info",
-                    data: `Sending first greeting to ${name}`
-                }, extra.sessionId);
-
-                await sleep(1000); // Wait another second before second greeting
-
-                await server.sendLoggingMessage({
-                    level: "info",
-                    data: `Sending second greeting to ${name}`
-                }, extra.sessionId);
-
-                return {
-                    content: [
-                        {
-                            type: 'text',
-                            text: `Good morning, ${name}!`,
-                        }
-                    ],
-                };
-            }
-        );
-        // Register a tool that demonstrates elicitation (user input collection)
-        // This creates a closure that captures the server instance
-        server.tool(
-            'collect-user-info',
-            'A tool that collects user information through elicitation',
-            {
-                infoType: z.enum(['contact', 'preferences', 'feedback']).describe('Type of information to collect'),
-            },
-            async ({infoType}): Promise<CallToolResult> => {
-                let message: string;
-                let requestedSchema: {
-                    type: 'object';
-                    properties: Record<string, PrimitiveSchemaDefinition>;
-                    required?: string[];
-                };
-
-                switch (infoType) {
-                    case 'contact':
-                        message = 'Please provide your contact information';
-                        requestedSchema = {
-                            type: 'object',
-                            properties: {
-                                name: {
-                                    type: 'string',
-                                    title: 'Full Name',
-                                    description: 'Your full name',
-                                },
-                                email: {
-                                    type: 'string',
-                                    title: 'Email Address',
-                                    description: 'Your email address',
-                                    format: 'email',
-                                },
-                                phone: {
-                                    type: 'string',
-                                    title: 'Phone Number',
-                                    description: 'Your phone number (optional)',
-                                },
-                            },
-                            required: ['name', 'email'],
-                        };
-                        break;
-                    case 'preferences':
-                        message = 'Please set your preferences';
-                        requestedSchema = {
-                            type: 'object',
-                            properties: {
-                                theme: {
-                                    type: 'string',
-                                    title: 'Theme',
-                                    description: 'Choose your preferred theme',
-                                    enum: ['light', 'dark', 'auto'],
-                                    enumNames: ['Light', 'Dark', 'Auto'],
-                                },
-                                notifications: {
-                                    type: 'boolean',
-                                    title: 'Enable Notifications',
-                                    description: 'Would you like to receive notifications?',
-                                    default: true,
-                                },
-                                frequency: {
-                                    type: 'string',
-                                    title: 'Notification Frequency',
-                                    description: 'How often would you like notifications?',
-                                    enum: ['daily', 'weekly', 'monthly'],
-                                    enumNames: ['Daily', 'Weekly', 'Monthly'],
-                                },
-                            },
-                            required: ['theme'],
-                        };
-                        break;
-                    case 'feedback':
-                        message = 'Please provide your feedback';
-                        requestedSchema = {
-                            type: 'object',
-                            properties: {
-                                rating: {
-                                    type: 'integer',
-                                    title: 'Rating',
-                                    description: 'Rate your experience (1-5)',
-                                    minimum: 1,
-                                    maximum: 5,
-                                },
-                                comments: {
-                                    type: 'string',
-                                    title: 'Comments',
-                                    description: 'Additional comments (optional)',
-                                    maxLength: 500,
-                                },
-                                recommend: {
-                                    type: 'boolean',
-                                    title: 'Would you recommend this?',
-                                    description: 'Would you recommend this to others?',
-                                },
-                            },
-                            required: ['rating', 'recommend'],
-                        };
-                        break;
-                    default:
-                        throw new Error(`Unknown info type: ${infoType}`);
-                }
-
-                try {
-                    // Use the underlying server instance to elicit input from the client
-                    const result = await server.server.elicitInput({
-                        message,
-                        requestedSchema,
-                    });
-
-                    if (result.action === 'accept') {
-                        return {
-                            content: [
-                                {
-                                    type: 'text',
-                                    text: `Thank you! Collected ${infoType} information: ${JSON.stringify(result.content, null, 2)}`,
-                                },
-                            ],
-                        };
-                    } else if (result.action === 'decline') {
-                        return {
-                            content: [
-                                {
-                                    type: 'text',
-                                    text: `No information was collected. User declined ${infoType} information request.`,
-                                },
-                            ],
-                        };
-                    } else {
-                        return {
-                            content: [
-                                {
-                                    type: 'text',
-                                    text: `Information collection was cancelled by the user.`,
-                                },
-                            ],
-                        };
-                    }
-                } catch (error) {
-                    return {
-                        content: [
-                            {
-                                type: 'text',
-                                text: `Error collecting ${infoType} information: ${error}`,
-                            },
-                        ],
-                    };
-                }
-            }
-        );
-
-        // Register a simple prompt with title
-        server.registerPrompt(
-            'greeting-template',
-            {
-                title: 'Greeting Template',  // Display name for UI
-                description: 'A simple greeting prompt template',
-                argsSchema: {
-                    name: z.string().describe('Name to include in greeting'),
-                },
-            },
-            async ({name}): Promise<GetPromptResult> => {
-                return {
-                    messages: [
-                        {
-                            role: 'user',
-                            content: {
-                                type: 'text',
-                                text: `Please greet ${name} in a friendly manner.`,
-                            },
-                        },
-                    ],
-                };
-            }
-        );
-
-        // Register a tool specifically for testing resumability
-        server.tool(
-            'start-notification-stream',
-            'Starts sending periodic notifications for testing resumability',
-            {
-                interval: z.number().describe('Interval in milliseconds between notifications').default(100),
-                count: z.number().describe('Number of notifications to send (0 for 100)').default(50),
-            },
-            async ({interval, count}, extra): Promise<CallToolResult> => {
-                const sleep = (ms: number) => new Promise(resolve => setTimeout(resolve, ms));
-                let counter = 0;
-
-                while (count === 0 || counter < count) {
-                    counter++;
-                    try {
-                        await server.sendLoggingMessage({
-                            level: "info",
-                            data: `Periodic notification #${counter} at ${new Date().toISOString()}`
-                        }, extra.sessionId);
-                    } catch (error) {
-                        console.error("Error sending notification:", error);
-                    }
-                    // Wait for the specified interval
-                    await sleep(interval);
-                }
-
-                return {
-                    content: [
-                        {
-                            type: 'text',
-                            text: `Started sending periodic notifications every ${interval}ms`,
-                        }
-                    ],
-                };
-            }
-        );
-
-        // Create a simple resource at a fixed URI
-        server.registerResource(
-            'greeting-resource',
-            'https://example.com/greetings/default',
-            {
-                title: 'Default Greeting',  // Display name for UI
-                description: 'A simple greeting resource',
-                mimeType: 'text/plain'
-            },
-            async (): Promise<ReadResourceResult> => {
-                return {
-                    contents: [
-                        {
-                            uri: 'https://example.com/greetings/default',
-                            text: 'Hello, world!',
-                        },
-                    ],
-                };
-            }
-        );
-
-        // Create additional resources for ResourceLink demonstration
-        server.registerResource(
-            'example-file-1',
-            'file:///example/file1.txt',
-            {
-                title: 'Example File 1',
-                description: 'First example file for ResourceLink demonstration',
-                mimeType: 'text/plain'
-            },
-            async (): Promise<ReadResourceResult> => {
-                return {
-                    contents: [
-                        {
-                            uri: 'file:///example/file1.txt',
-                            text: 'This is the content of file 1',
-                        },
-                    ],
-                };
-            }
-        );
-
-        server.registerResource(
-            'example-file-2',
-            'file:///example/file2.txt',
-            {
-                title: 'Example File 2',
-                description: 'Second example file for ResourceLink demonstration',
-                mimeType: 'text/plain'
-            },
-            async (): Promise<ReadResourceResult> => {
-                return {
-                    contents: [
-                        {
-                            uri: 'file:///example/file2.txt',
-                            text: 'This is the content of file 2',
-                        },
-                    ],
-                };
-            }
-        );
-
-        // Register a tool that returns ResourceLinks
-        server.registerTool(
-            'list-files',
-            {
-                title: 'List Files with ResourceLinks',
-                description: 'Returns a list of files as ResourceLinks without embedding their content',
-                inputSchema: {
-                    includeDescriptions: z.boolean().optional().describe('Whether to include descriptions in the resource links'),
-                },
-            },
-            async ({includeDescriptions = true}): Promise<CallToolResult> => {
-                const resourceLinks: ResourceLink[] = [
-                    {
-                        type: 'resource_link',
-                        uri: 'https://example.com/greetings/default',
-                        name: 'Default Greeting',
-                        mimeType: 'text/plain',
-                        ...(includeDescriptions && {description: 'A simple greeting resource'})
-                    },
-                    {
-                        type: 'resource_link',
-                        uri: 'file:///example/file1.txt',
-                        name: 'Example File 1',
-                        mimeType: 'text/plain',
-                        ...(includeDescriptions && {description: 'First example file for ResourceLink demonstration'})
-                    },
-                    {
-                        type: 'resource_link',
-                        uri: 'file:///example/file2.txt',
-                        name: 'Example File 2',
-                        mimeType: 'text/plain',
-                        ...(includeDescriptions && {description: 'Second example file for ResourceLink demonstration'})
-                    }
-                ];
-
-                return {
-                    content: [
-                        {
-                            type: 'text',
-                            text: 'Here are the available files as resource links:',
-                        },
-                        ...resourceLinks,
-                        {
-                            type: 'text',
-                            text: '\nYou can read any of these resources using their URI.',
-                        }
-                    ],
-                };
-            }
-        );
-
-        return server;
-    };
-
-    const MCP_PORT = process.env.MCP_PORT ? parseInt(process.env.MCP_PORT, 10) : 3000;
-    const AUTH_PORT = process.env.MCP_AUTH_PORT ? parseInt(process.env.MCP_AUTH_PORT, 10) : 3001;
-
-    const app = express();
-    app.use(express.json());
-
-// Allow CORS all domains, expose the Mcp-Session-Id header
-    app.use(cors({
-        origin: '*', // Allow all origins
-        exposedHeaders: ["Mcp-Session-Id"]
-    }));
-
-// Set up OAuth if enabled
-    let authMiddleware = null;
-    if (useOAuth) {
-        // Create auth middleware for MCP endpoints
-        const mcpServerUrl = new URL(`http://localhost:${MCP_PORT}/mcp`);
-        const authServerUrl = new URL(`http://localhost:${AUTH_PORT}`);
-
-        const oauthMetadata: OAuthMetadata = setupAuthServer({
-            authServerUrl,
-            mcpServerUrl,
-            strictResource: strictOAuth
-        });
-
-        const tokenVerifier = {
-            verifyAccessToken: async (token: string) => {
-                const endpoint = oauthMetadata.introspection_endpoint;
-
-                if (!endpoint) {
-                    throw new Error('No token verification endpoint available in metadata');
-                }
-
-                const response = await fetch(endpoint, {
-                    method: 'POST',
-                    headers: {
-                        'Content-Type': 'application/x-www-form-urlencoded',
-                    },
-                    body: new URLSearchParams({
-                        token: token
-                    }).toString()
-                });
-
-
-                if (!response.ok) {
-                    throw new Error(`Invalid or expired token: ${await response.text()}`);
-                }
-
-                const data = await response.json();
-
-                if (strictOAuth) {
-                    if (!data.aud) {
-                        throw new Error(`Resource Indicator (RFC8707) missing`);
-                    }
-                    if (!checkResourceAllowed({requestedResource: data.aud, configuredResource: mcpServerUrl})) {
-                        throw new Error(`Expected resource indicator ${mcpServerUrl}, got: ${data.aud}`);
-                    }
-                }
-
-                // Convert the response to AuthInfo format
-                return {
-                    token,
-                    clientId: data.client_id,
-                    scopes: data.scope ? data.scope.split(' ') : [],
-                    expiresAt: data.exp,
-                };
-            }
-        }
-        // Add metadata routes to the main MCP server
-        app.use(mcpAuthMetadataRouter({
-            oauthMetadata,
-            resourceServerUrl: mcpServerUrl,
-            scopesSupported: ['mcp:tools'],
-            resourceName: 'MCP Demo Server',
-        }));
-
-        authMiddleware = requireBearerAuth({
-            verifier: tokenVerifier,
-            requiredScopes: [],
-            resourceMetadataUrl: getOAuthProtectedResourceMetadataUrl(mcpServerUrl),
-        });
-    }
-
-// Map to store transports by session ID
-    const transports: { [sessionId: string]: StreamableHTTPServerTransport } = {};
-
-// MCP POST endpoint with optional auth
-    const mcpPostHandler = async (req: Request, res: Response) => {
-        const sessionId = req.headers['mcp-session-id'] as string | undefined;
-        if (sessionId) {
-            console.log(`Received MCP request for session: ${sessionId}`);
-        } else {
-            console.log('Request body:', req.body);
-        }
-
-        if (useOAuth && req.auth) {
-            console.log('Authenticated user:', req.auth);
-        }
-        try {
-            let transport: StreamableHTTPServerTransport;
-            if (sessionId && transports[sessionId]) {
-                // Reuse existing transport
-                transport = transports[sessionId];
-            } else if (!sessionId && isInitializeRequest(req.body)) {
-                // New initialization request
-                const eventStore = new InMemoryEventStore();
-                transport = new StreamableHTTPServerTransport({
-                    sessionIdGenerator: () => randomUUID(),
-                    eventStore, // Enable resumability
-                    onsessioninitialized: (sessionId) => {
-                        // Store the transport by session ID when session is initialized
-                        // This avoids race conditions where requests might come in before the session is stored
-                        console.log(`Session initialized with ID: ${sessionId}`);
-                        transports[sessionId] = transport;
-                    }
-                });
-
-                // Set up onclose handler to clean up transport when closed
-                transport.onclose = () => {
-                    const sid = transport.sessionId;
-                    if (sid && transports[sid]) {
-                        console.log(`Transport closed for session ${sid}, removing from transports map`);
-                        delete transports[sid];
-                    }
-                };
-
-                // Connect the transport to the MCP server BEFORE handling the request
-                // so responses can flow back through the same transport
-                const server = getServer();
-                await server.connect(transport);
-
-                await transport.handleRequest(req, res, req.body);
-                return; // Already handled
-            } else {
-                // Invalid request - no session ID or not initialization request
-                res.status(400).json({
-                    jsonrpc: '2.0',
-                    error: {
-                        code: -32000,
-                        message: 'Bad Request: No valid session ID provided',
-                    },
-                    id: null,
-                });
-                return;
-            }
-
-            // Handle the request with existing transport - no need to reconnect
-            // The existing transport is already connected to the server
-            await transport.handleRequest(req, res, req.body);
-        } catch (error) {
-            console.error('Error handling MCP request:', error);
-            if (!res.headersSent) {
-                res.status(500).json({
-                    jsonrpc: '2.0',
-                    error: {
-                        code: -32603,
-                        message: 'Internal server error',
-                    },
-                    id: null,
-                });
-            }
-        }
-    };
-
-// Set up routes with conditional auth middleware
-    if (useOAuth && authMiddleware) {
-        app.post('/mcp', authMiddleware, mcpPostHandler);
-    } else {
-        app.post('/mcp', mcpPostHandler);
-    }
-
-// Handle GET requests for SSE streams (using built-in support from StreamableHTTP)
-    const mcpGetHandler = async (req: Request, res: Response) => {
-        const sessionId = req.headers['mcp-session-id'] as string | undefined;
-        if (!sessionId || !transports[sessionId]) {
-            res.status(400).send('Invalid or missing session ID');
-            return;
-        }
-
-        if (useOAuth && req.auth) {
-            console.log('Authenticated SSE connection from user:', req.auth);
-        }
-
-        // Check for Last-Event-ID header for resumability
-        const lastEventId = req.headers['last-event-id'] as string | undefined;
-        if (lastEventId) {
-            console.log(`Client reconnecting with Last-Event-ID: ${lastEventId}`);
-        } else {
-            console.log(`Establishing new SSE stream for session ${sessionId}`);
-        }
-
-        const transport = transports[sessionId];
-        await transport.handleRequest(req, res);
-    };
-
-// Set up GET route with conditional auth middleware
-    if (useOAuth && authMiddleware) {
-        app.get('/mcp', authMiddleware, mcpGetHandler);
-    } else {
-        app.get('/mcp', mcpGetHandler);
-    }
-
-// Handle DELETE requests for session termination (according to MCP spec)
-    const mcpDeleteHandler = async (req: Request, res: Response) => {
-        const sessionId = req.headers['mcp-session-id'] as string | undefined;
-        if (!sessionId || !transports[sessionId]) {
-            res.status(400).send('Invalid or missing session ID');
-            return;
-        }
-
-        console.log(`Received session termination request for session ${sessionId}`);
-
-        try {
-            const transport = transports[sessionId];
-            await transport.handleRequest(req, res);
-        } catch (error) {
-            console.error('Error handling session termination:', error);
-            if (!res.headersSent) {
-                res.status(500).send('Error processing session termination');
-            }
-        }
-    };
-
-// Set up DELETE route with conditional auth middleware
-    if (useOAuth && authMiddleware) {
-        app.delete('/mcp', authMiddleware, mcpDeleteHandler);
-    } else {
-        app.delete('/mcp', mcpDeleteHandler);
-    }
-
-    app.listen(MCP_PORT, (error) => {
-        if (error) {
-            console.error('Failed to start server:', error);
-            process.exit(1);
-        }
-        console.log(`MCP Streamable HTTP Server listening on port ${MCP_PORT}`);
-    });
-
-// Handle server shutdown
-    process.on('SIGINT', async () => {
-        console.log('Shutting down server...');
-
-        // Close all active transports to properly clean up resources
-        for (const sessionId in transports) {
-            try {
-                console.log(`Closing transport for session ${sessionId}`);
-                await transports[sessionId].close();
-                delete transports[sessionId];
-            } catch (error) {
-                console.error(`Error closing transport for session ${sessionId}:`, error);
-            }
-        }
-        console.log('Server shutdown complete');
-        process.exit(0);
-    });
-
-}
-
-main().catch((err) => {
-    console.error('Failed to start server:', err);
-    process.exit(1);
-});

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/stdio/KotlinClientTsServerEdgeCasesTestStdio.kt

@@ -4,7 +4,6 @@ import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TsTestBase
 import io.modelcontextprotocol.kotlin.sdk.types.TextContent
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
@@ -19,7 +18,6 @@ import kotlin.test.assertEquals
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 
-@DisabledOnCI
 class KotlinClientTsServerEdgeCasesTestStdio : TsTestBase() {
 
     override val transportKind = TransportKind.STDIO

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/stdio/KotlinClientTsServerTestStdio.kt

@@ -3,9 +3,7 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.stdio
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.AbstractKotlinClientTsServerTest
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 
-@DisabledOnCI
 class KotlinClientTsServerTestStdio : AbstractKotlinClientTsServerTest() {
 
     override val transportKind = TransportKind.STDIO

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/stdio/OldSchemaKotlinClientTsServerEdgeCasesTestStdio.kt

@@ -4,7 +4,6 @@ import io.modelcontextprotocol.kotlin.sdk.TextContent
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TsTestBase
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.async
 import kotlinx.coroutines.awaitAll
@@ -19,7 +18,6 @@ import kotlin.test.assertEquals
 import kotlin.test.assertNotNull
 import kotlin.test.assertTrue
 
-@DisabledOnCI
 class OldSchemaKotlinClientTsServerEdgeCasesTestStdio : TsTestBase() {
 
     override val transportKind = TransportKind.STDIO

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/stdio/OldSchemaKotlinClientTsServerTestStdio.kt

@@ -3,9 +3,7 @@ package io.modelcontextprotocol.kotlin.sdk.integration.typescript.stdio
 import io.modelcontextprotocol.kotlin.sdk.client.Client
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.OldSchemaAbstractKotlinClientTsServerTest
 import io.modelcontextprotocol.kotlin.sdk.integration.typescript.TransportKind
-import io.modelcontextprotocol.kotlin.test.utils.DisabledOnCI
 
-@DisabledOnCI
 class OldSchemaKotlinClientTsServerTestStdio : OldSchemaAbstractKotlinClientTsServerTest() {
 
     override val transportKind = TransportKind.STDIO

integration-test/src/jvmTest/kotlin/io/modelcontextprotocol/kotlin/sdk/integration/typescript/stdio/myClient.ts

@@ -16,7 +16,7 @@ async function main() {
 
     const path = await import('path');
     const { pathToFileURL } = await import('url');
-    const clientUrl = pathToFileURL(path.join(sdkDir, 'src', 'client', 'index.ts')).href;
+    const clientUrl = pathToFileURL(path.join(sdkDir, 'packages', 'client', 'src', 'index.ts')).href;
     ({ Client } = await import(clientUrl));
 
     if (!toolName) {