Fix and refactor StreamableHttpTransport

- add EventStore and support "Last-Event-ID"
- Origin check
- thread safety

Author: devcrocod

api/kotlin-sdk.api

@@ -846,19 +846,12 @@ public final class io/modelcontextprotocol/kotlin/sdk/InitializedNotification$Co
 
 public final class io/modelcontextprotocol/kotlin/sdk/JSONRPCError : io/modelcontextprotocol/kotlin/sdk/JSONRPCMessage {
 	public static final field Companion Lio/modelcontextprotocol/kotlin/sdk/JSONRPCError$Companion;
-	public fun <init> (Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;)V
-	public synthetic fun <init> (Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
-	public final fun component1 ()Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;
-	public final fun component2 ()Ljava/lang/String;
-	public final fun component3 ()Lkotlinx/serialization/json/JsonObject;
-	public final fun copy (Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;)Lio/modelcontextprotocol/kotlin/sdk/JSONRPCError;
-	public static synthetic fun copy$default (Lio/modelcontextprotocol/kotlin/sdk/JSONRPCError;Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/JSONRPCError;
-	public fun equals (Ljava/lang/Object;)Z
+	public fun <init> (Lio/modelcontextprotocol/kotlin/sdk/RequestId;Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;)V
+	public synthetic fun <init> (Lio/modelcontextprotocol/kotlin/sdk/RequestId;Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;Ljava/lang/String;Lkotlinx/serialization/json/JsonObject;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public final fun getCode ()Lio/modelcontextprotocol/kotlin/sdk/ErrorCode;
 	public final fun getData ()Lkotlinx/serialization/json/JsonObject;
+	public final fun getId ()Lio/modelcontextprotocol/kotlin/sdk/RequestId;
 	public final fun getMessage ()Ljava/lang/String;
-	public fun hashCode ()I
-	public fun toString ()Ljava/lang/String;
 }
 
 public final synthetic class io/modelcontextprotocol/kotlin/sdk/JSONRPCError$$serializer : kotlinx/serialization/internal/GeneratedSerializer {
@@ -2807,6 +2800,11 @@ public final class io/modelcontextprotocol/kotlin/sdk/client/WebSocketMcpKtorCli
 	public static synthetic fun mcpWebSocketTransport$default (Lio/ktor/client/HttpClient;Ljava/lang/String;Lkotlin/jvm/functions/Function1;ILjava/lang/Object;)Lio/modelcontextprotocol/kotlin/sdk/client/WebSocketClientTransport;
 }
 
+public abstract interface class io/modelcontextprotocol/kotlin/sdk/server/EventStore {
+	public abstract fun replayEventsAfter (Ljava/lang/String;Lkotlin/jvm/functions/Function3;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public abstract fun storeEvent (Ljava/lang/String;Lio/modelcontextprotocol/kotlin/sdk/JSONRPCMessage;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+}
+
 public final class io/modelcontextprotocol/kotlin/sdk/server/KtorServerKt {
 	public static final fun MCP (Lio/ktor/server/application/Application;Lkotlin/jvm/functions/Function0;)V
 	public static final fun mcp (Lio/ktor/server/application/Application;Lkotlin/jvm/functions/Function0;)V
@@ -2918,15 +2916,19 @@ public final class io/modelcontextprotocol/kotlin/sdk/server/StdioServerTranspor
 }
 
 public final class io/modelcontextprotocol/kotlin/sdk/server/StreamableHttpServerTransport : io/modelcontextprotocol/kotlin/sdk/shared/AbstractTransport {
+	public static final field STANDALONE_SSE_STREAM_ID Ljava/lang/String;
 	public fun <init> ()V
-	public fun <init> (ZZ)V
-	public synthetic fun <init> (ZZILkotlin/jvm/internal/DefaultConstructorMarker;)V
+	public fun <init> (ZZLjava/util/List;Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/server/EventStore;)V
+	public synthetic fun <init> (ZZLjava/util/List;Ljava/util/List;Lio/modelcontextprotocol/kotlin/sdk/server/EventStore;ILkotlin/jvm/internal/DefaultConstructorMarker;)V
 	public fun close (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public final fun getSessionId ()Ljava/lang/String;
 	public final fun handleDeleteRequest (Lio/ktor/server/application/ApplicationCall;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public final fun handleGetRequest (Lio/ktor/server/application/ApplicationCall;Lio/ktor/server/sse/ServerSSESession;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public final fun handlePostRequest (Lio/ktor/server/application/ApplicationCall;Lio/ktor/server/sse/ServerSSESession;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public final fun handleRequest (Lio/ktor/server/application/ApplicationCall;Lio/ktor/server/sse/ServerSSESession;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 	public fun send (Lio/modelcontextprotocol/kotlin/sdk/JSONRPCMessage;Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
+	public final fun setSessionIdGenerator (Lkotlin/jvm/functions/Function0;)V
+	public final fun setSessionInitialized (Lkotlin/jvm/functions/Function1;)V
 	public fun start (Lkotlin/coroutines/Continuation;)Ljava/lang/Object;
 }