428 lines
21 KiB
Diff
428 lines
21 KiB
Diff
diff --git a/dist/cjs/client/index.d.ts b/dist/cjs/client/index.d.ts
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index 1822bf749aec71d2bb295083d832114ee187bb67..58b859a7b32222fb5cb9f2011fdc5d010f3d05fb 100644
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--- a/dist/cjs/client/index.d.ts
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+++ b/dist/cjs/client/index.d.ts
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@@ -428,6 +428,8 @@ export declare class Client<RequestT extends Request = Request, NotificationT ex
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*
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* For task-based execution with streaming behavior, use client.experimental.tasks.callToolStream() instead.
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*/
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+ callTool(params: CallToolRequest['params'], resultSchema?: undefined, options?: RequestOptions): Promise<SchemaOutput<typeof CallToolResultSchema>>;
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+ callTool<T extends typeof CallToolResultSchema | typeof CompatibilityCallToolResultSchema>(params: CallToolRequest['params'], resultSchema: T, options?: RequestOptions): Promise<SchemaOutput<T>>;
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callTool(params: CallToolRequest['params'], resultSchema?: typeof CallToolResultSchema | typeof CompatibilityCallToolResultSchema, options?: RequestOptions): Promise<{
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[x: string]: unknown;
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content: ({
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diff --git a/dist/esm/client/index.d.ts b/dist/esm/client/index.d.ts
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index 1822bf749aec71d2bb295083d832114ee187bb67..58b859a7b32222fb5cb9f2011fdc5d010f3d05fb 100644
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--- a/dist/esm/client/index.d.ts
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+++ b/dist/esm/client/index.d.ts
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@@ -428,6 +428,8 @@ export declare class Client<RequestT extends Request = Request, NotificationT ex
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*
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* For task-based execution with streaming behavior, use client.experimental.tasks.callToolStream() instead.
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*/
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+ callTool(params: CallToolRequest['params'], resultSchema?: undefined, options?: RequestOptions): Promise<SchemaOutput<typeof CallToolResultSchema>>;
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+ callTool<T extends typeof CallToolResultSchema | typeof CompatibilityCallToolResultSchema>(params: CallToolRequest['params'], resultSchema: T, options?: RequestOptions): Promise<SchemaOutput<T>>;
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callTool(params: CallToolRequest['params'], resultSchema?: typeof CallToolResultSchema | typeof CompatibilityCallToolResultSchema, options?: RequestOptions): Promise<{
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[x: string]: unknown;
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content: ({
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diff --git a/dist/cjs/client/index.js b/dist/cjs/client/index.js
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index 6ac1da14dc7f6211ae70f7711c124b76098816d8..adb5b7bd45514a406a0f7e40b64631c101584c84 100644
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--- a/dist/cjs/client/index.js
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+++ b/dist/cjs/client/index.js
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@@ -288,41 +288,16 @@ class Client extends protocol_js_1.Protocol {
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}
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async connect(transport, options) {
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await super.connect(transport);
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+ transport.onsessionexpired = async () => {
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+ await this._initialize(transport);
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+ };
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// When transport sessionId is already set this means we are trying to reconnect.
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// In this case we don't need to initialize again.
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if (transport.sessionId !== undefined) {
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return;
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}
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try {
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- const result = await this.request({
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- method: 'initialize',
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- params: {
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- protocolVersion: types_js_1.LATEST_PROTOCOL_VERSION,
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- capabilities: this._capabilities,
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- clientInfo: this._clientInfo
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- }
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- }, types_js_1.InitializeResultSchema, options);
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- if (result === undefined) {
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- throw new Error(`Server sent invalid initialize result: ${result}`);
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- }
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- if (!types_js_1.SUPPORTED_PROTOCOL_VERSIONS.includes(result.protocolVersion)) {
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- throw new Error(`Server's protocol version is not supported: ${result.protocolVersion}`);
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- }
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- this._serverCapabilities = result.capabilities;
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- this._serverVersion = result.serverInfo;
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- // HTTP transports must set the protocol version in each header after initialization.
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- if (transport.setProtocolVersion) {
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- transport.setProtocolVersion(result.protocolVersion);
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- }
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- this._instructions = result.instructions;
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- await this.notification({
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- method: 'notifications/initialized'
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- });
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- // Set up list changed handlers now that we know server capabilities
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- if (this._pendingListChangedConfig) {
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- this._setupListChangedHandlers(this._pendingListChangedConfig);
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- this._pendingListChangedConfig = undefined;
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- }
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+ await this._initialize(transport, options);
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}
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catch (error) {
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// Disconnect if initialization fails.
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@@ -330,6 +305,37 @@ class Client extends protocol_js_1.Protocol {
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throw error;
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}
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}
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+ async _initialize(transport, options) {
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+ const result = await this.request({
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+ method: 'initialize',
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+ params: {
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+ protocolVersion: types_js_1.LATEST_PROTOCOL_VERSION,
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+ capabilities: this._capabilities,
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+ clientInfo: this._clientInfo
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+ }
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+ }, types_js_1.InitializeResultSchema, options);
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+ if (result === undefined) {
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+ throw new Error(`Server sent invalid initialize result: ${result}`);
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+ }
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+ if (!types_js_1.SUPPORTED_PROTOCOL_VERSIONS.includes(result.protocolVersion)) {
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+ throw new Error(`Server's protocol version is not supported: ${result.protocolVersion}`);
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+ }
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+ this._serverCapabilities = result.capabilities;
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+ this._serverVersion = result.serverInfo;
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+ // HTTP transports must set the protocol version in each header after initialization.
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+ if (transport.setProtocolVersion) {
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+ transport.setProtocolVersion(result.protocolVersion);
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+ }
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+ this._instructions = result.instructions;
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+ await this.notification({
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+ method: 'notifications/initialized'
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+ });
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+ // Set up list changed handlers now that we know server capabilities
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+ if (this._pendingListChangedConfig) {
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+ this._setupListChangedHandlers(this._pendingListChangedConfig);
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+ this._pendingListChangedConfig = undefined;
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+ }
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+ }
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/**
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* After initialization has completed, this will be populated with the server's reported capabilities.
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*/
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diff --git a/dist/cjs/client/streamableHttp.js b/dist/cjs/client/streamableHttp.js
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index a29a7d3a0f14d9cd800ef5b296485237350c666f..c362ae5fe6c62c8c8eae7e2e61de1eedff5443c9 100644
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--- a/dist/cjs/client/streamableHttp.js
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+++ b/dist/cjs/client/streamableHttp.js
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@@ -290,7 +290,38 @@ class StreamableHTTPClientTransport {
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this.onclose?.();
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}
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async send(message, options) {
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+ return this._send(message, options, false);
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+ }
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+ async _recoverSession(expiredSessionId) {
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+ if (this._sessionRecovery) {
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+ await this._sessionRecovery;
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+ return true;
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+ }
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+ if (this._sessionId !== expiredSessionId)
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+ return true;
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+ this._sessionId = undefined;
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+ this._sessionRecovery = Promise.resolve().then(() => this.onsessionexpired?.());
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try {
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+ await this._sessionRecovery;
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+ }
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+ catch (error) {
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+ this._sessionId = undefined;
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+ await this.close();
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+ throw error;
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+ }
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+ finally {
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+ this._sessionRecovery = undefined;
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+ }
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+ return true;
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+ }
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+ async _send(message, options, isSessionRetry) {
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+ try {
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+ if (this._sessionRecovery && !(0, types_js_1.isInitializeRequest)(message) && !(0, types_js_1.isInitializedNotification)(message)) {
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+ await this._sessionRecovery;
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+ if (options?.isRequestActive?.() === false) {
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+ throw new Error('Request is no longer active');
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+ }
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+ }
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const { resumptionToken, onresumptiontoken } = options || {};
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if (resumptionToken) {
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// If we have at last event ID, we need to reconnect the SSE stream
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@@ -298,6 +329,7 @@ class StreamableHTTPClientTransport {
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return;
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}
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const headers = await this._commonHeaders();
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+ const requestSessionId = headers.get('mcp-session-id') ?? undefined;
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headers.set('content-type', 'application/json');
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headers.set('accept', 'application/json, text/event-stream');
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const init = {
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@@ -310,11 +342,20 @@ class StreamableHTTPClientTransport {
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const response = await (this._fetch ?? fetch)(this._url, init);
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// Handle session ID received during initialization
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const sessionId = response.headers.get('mcp-session-id');
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- if (sessionId) {
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+ if (sessionId && (requestSessionId === undefined || this._sessionId === requestSessionId)) {
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this._sessionId = sessionId;
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}
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if (!response.ok) {
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const text = await response.text().catch(() => null);
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+ if (response.status === 404 && requestSessionId && !isSessionRetry && !(0, types_js_1.isInitializedNotification)(message)) {
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+ const recovered = await this._recoverSession(requestSessionId);
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+ if (options?.isRequestActive?.() === false) {
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+ throw new Error('Request is no longer active');
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+ }
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+ if (recovered) {
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+ return this._send(message, options, true);
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+ }
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+ }
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if (response.status === 401 && this._authProvider) {
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// Prevent infinite recursion when server returns 401 after successful auth
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if (this._hasCompletedAuthFlow) {
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@@ -335,7 +376,7 @@ class StreamableHTTPClientTransport {
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// Mark that we completed auth flow
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this._hasCompletedAuthFlow = true;
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// Purposely _not_ awaited, so we don't call onerror twice
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- return this.send(message);
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+ return this._send(message, options, isSessionRetry);
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}
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if (response.status === 403 && this._authProvider) {
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const { resourceMetadataUrl, scope, error } = (0, auth_js_1.extractWWWAuthenticateParams)(response);
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@@ -362,7 +403,7 @@ class StreamableHTTPClientTransport {
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if (result !== 'AUTHORIZED') {
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throw new auth_js_1.UnauthorizedError();
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}
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- return this.send(message);
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+ return this._send(message, options, isSessionRetry);
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}
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}
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throw new StreamableHTTPError(response.status, `Error POSTing to endpoint: ${text}`);
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diff --git a/dist/cjs/shared/protocol.js b/dist/cjs/shared/protocol.js
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index 3617e787f0ba70447c99501aee7aa67584d89758..4a96d6a0328fa348b96f3869ab7e0bb77538182b 100644
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--- a/dist/cjs/shared/protocol.js
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+++ b/dist/cjs/shared/protocol.js
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@@ -744,7 +744,12 @@ class Protocol {
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}
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else {
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// No related task - send through transport normally
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- this._transport.send(jsonrpcRequest, { relatedRequestId, resumptionToken, onresumptiontoken }).catch(error => {
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+ this._transport.send(jsonrpcRequest, {
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+ relatedRequestId,
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+ resumptionToken,
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+ onresumptiontoken,
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+ isRequestActive: () => this._responseHandlers.has(messageId)
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+ }).catch(error => {
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this._cleanupTimeout(messageId);
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reject(error);
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});
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diff --git a/dist/esm/client/index.js b/dist/esm/client/index.js
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index 49b12c6cd918c457420fef7ad5528a9443d1a191..2afe2e22e960f26c9d516ef135d89f8eb9e4caff 100644
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--- a/dist/esm/client/index.js
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+++ b/dist/esm/client/index.js
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@@ -284,41 +284,16 @@ export class Client extends Protocol {
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}
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async connect(transport, options) {
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await super.connect(transport);
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+ transport.onsessionexpired = async () => {
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+ await this._initialize(transport);
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+ };
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// When transport sessionId is already set this means we are trying to reconnect.
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// In this case we don't need to initialize again.
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if (transport.sessionId !== undefined) {
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return;
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}
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try {
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- const result = await this.request({
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- method: 'initialize',
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- params: {
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- protocolVersion: LATEST_PROTOCOL_VERSION,
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- capabilities: this._capabilities,
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- clientInfo: this._clientInfo
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- }
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- }, InitializeResultSchema, options);
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- if (result === undefined) {
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- throw new Error(`Server sent invalid initialize result: ${result}`);
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- }
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- if (!SUPPORTED_PROTOCOL_VERSIONS.includes(result.protocolVersion)) {
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- throw new Error(`Server's protocol version is not supported: ${result.protocolVersion}`);
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- }
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- this._serverCapabilities = result.capabilities;
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- this._serverVersion = result.serverInfo;
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- // HTTP transports must set the protocol version in each header after initialization.
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- if (transport.setProtocolVersion) {
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- transport.setProtocolVersion(result.protocolVersion);
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- }
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- this._instructions = result.instructions;
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- await this.notification({
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- method: 'notifications/initialized'
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- });
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- // Set up list changed handlers now that we know server capabilities
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- if (this._pendingListChangedConfig) {
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- this._setupListChangedHandlers(this._pendingListChangedConfig);
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- this._pendingListChangedConfig = undefined;
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- }
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+ await this._initialize(transport, options);
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}
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catch (error) {
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// Disconnect if initialization fails.
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@@ -326,6 +301,37 @@ export class Client extends Protocol {
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throw error;
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}
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}
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+ async _initialize(transport, options) {
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+ const result = await this.request({
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+ method: 'initialize',
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+ params: {
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+ protocolVersion: LATEST_PROTOCOL_VERSION,
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+ capabilities: this._capabilities,
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+ clientInfo: this._clientInfo
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+ }
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+ }, InitializeResultSchema, options);
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+ if (result === undefined) {
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+ throw new Error(`Server sent invalid initialize result: ${result}`);
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+ }
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+ if (!SUPPORTED_PROTOCOL_VERSIONS.includes(result.protocolVersion)) {
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+ throw new Error(`Server's protocol version is not supported: ${result.protocolVersion}`);
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+ }
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+ this._serverCapabilities = result.capabilities;
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+ this._serverVersion = result.serverInfo;
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+ // HTTP transports must set the protocol version in each header after initialization.
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+ if (transport.setProtocolVersion) {
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+ transport.setProtocolVersion(result.protocolVersion);
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+ }
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+ this._instructions = result.instructions;
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+ await this.notification({
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+ method: 'notifications/initialized'
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+ });
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+ // Set up list changed handlers now that we know server capabilities
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+ if (this._pendingListChangedConfig) {
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+ this._setupListChangedHandlers(this._pendingListChangedConfig);
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+ this._pendingListChangedConfig = undefined;
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+ }
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+ }
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/**
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* After initialization has completed, this will be populated with the server's reported capabilities.
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*/
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diff --git a/dist/esm/client/streamableHttp.js b/dist/esm/client/streamableHttp.js
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index 624172aa24ae255a67c083f9c19053343e4a0581..ac75b14545fda44aff7ff4d97cc5da884fcc627a 100644
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--- a/dist/esm/client/streamableHttp.js
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+++ b/dist/esm/client/streamableHttp.js
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@@ -1,5 +1,5 @@
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import { createFetchWithInit, normalizeHeaders } from '../shared/transport.js';
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-import { isInitializedNotification, isJSONRPCRequest, isJSONRPCResultResponse, JSONRPCMessageSchema } from '../types.js';
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+import { isInitializedNotification, isInitializeRequest, isJSONRPCRequest, isJSONRPCResultResponse, JSONRPCMessageSchema } from '../types.js';
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import { auth, extractWWWAuthenticateParams, UnauthorizedError } from './auth.js';
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import { EventSourceParserStream } from 'eventsource-parser/stream';
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// Default reconnection options for StreamableHTTP connections
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@@ -286,7 +286,38 @@ export class StreamableHTTPClientTransport {
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this.onclose?.();
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}
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async send(message, options) {
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+ return this._send(message, options, false);
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+ }
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+ async _recoverSession(expiredSessionId) {
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+ if (this._sessionRecovery) {
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+ await this._sessionRecovery;
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+ return true;
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+ }
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+ if (this._sessionId !== expiredSessionId)
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+ return true;
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+ this._sessionId = undefined;
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+ this._sessionRecovery = Promise.resolve().then(() => this.onsessionexpired?.());
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try {
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+ await this._sessionRecovery;
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+ }
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+ catch (error) {
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+ this._sessionId = undefined;
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+ await this.close();
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+ throw error;
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+ }
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+ finally {
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+ this._sessionRecovery = undefined;
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+ }
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+ return true;
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+ }
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+ async _send(message, options, isSessionRetry) {
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+ try {
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+ if (this._sessionRecovery && !isInitializeRequest(message) && !isInitializedNotification(message)) {
|
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+ await this._sessionRecovery;
|
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+ if (options?.isRequestActive?.() === false) {
|
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+ throw new Error('Request is no longer active');
|
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+ }
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+ }
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|
const { resumptionToken, onresumptiontoken } = options || {};
|
|
if (resumptionToken) {
|
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// If we have at last event ID, we need to reconnect the SSE stream
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@@ -294,6 +325,7 @@ export class StreamableHTTPClientTransport {
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return;
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}
|
|
const headers = await this._commonHeaders();
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+ const requestSessionId = headers.get('mcp-session-id') ?? undefined;
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headers.set('content-type', 'application/json');
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headers.set('accept', 'application/json, text/event-stream');
|
|
const init = {
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@@ -306,11 +338,20 @@ export class StreamableHTTPClientTransport {
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const response = await (this._fetch ?? fetch)(this._url, init);
|
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// Handle session ID received during initialization
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const sessionId = response.headers.get('mcp-session-id');
|
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- if (sessionId) {
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+ if (sessionId && (requestSessionId === undefined || this._sessionId === requestSessionId)) {
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this._sessionId = sessionId;
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}
|
|
if (!response.ok) {
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const text = await response.text().catch(() => null);
|
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+ if (response.status === 404 && requestSessionId && !isSessionRetry && !isInitializedNotification(message)) {
|
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+ const recovered = await this._recoverSession(requestSessionId);
|
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+ if (options?.isRequestActive?.() === false) {
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+ throw new Error('Request is no longer active');
|
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+ }
|
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+ if (recovered) {
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+ return this._send(message, options, true);
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+ }
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+ }
|
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if (response.status === 401 && this._authProvider) {
|
|
// Prevent infinite recursion when server returns 401 after successful auth
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|
if (this._hasCompletedAuthFlow) {
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@@ -331,7 +372,7 @@ export class StreamableHTTPClientTransport {
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// Mark that we completed auth flow
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this._hasCompletedAuthFlow = true;
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// Purposely _not_ awaited, so we don't call onerror twice
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- return this.send(message);
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+ return this._send(message, options, isSessionRetry);
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}
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if (response.status === 403 && this._authProvider) {
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const { resourceMetadataUrl, scope, error } = extractWWWAuthenticateParams(response);
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@@ -358,7 +399,7 @@ export class StreamableHTTPClientTransport {
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if (result !== 'AUTHORIZED') {
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throw new UnauthorizedError();
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}
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- return this.send(message);
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+ return this._send(message, options, isSessionRetry);
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}
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}
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throw new StreamableHTTPError(response.status, `Error POSTing to endpoint: ${text}`);
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diff --git a/dist/esm/shared/protocol.js b/dist/esm/shared/protocol.js
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index bfa2b7120a0f50c569364ea5264e6f811076f44f..abd8dfd707c155f71dae7aeeeeaf7547368ac749 100644
|
|
--- a/dist/esm/shared/protocol.js
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|
+++ b/dist/esm/shared/protocol.js
|
|
@@ -740,7 +740,12 @@ export class Protocol {
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}
|
|
else {
|
|
// No related task - send through transport normally
|
|
- this._transport.send(jsonrpcRequest, { relatedRequestId, resumptionToken, onresumptiontoken }).catch(error => {
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+ this._transport.send(jsonrpcRequest, {
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+ relatedRequestId,
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+ resumptionToken,
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+ onresumptiontoken,
|
|
+ isRequestActive: () => this._responseHandlers.has(messageId)
|
|
+ }).catch(error => {
|
|
this._cleanupTimeout(messageId);
|
|
reject(error);
|
|
});
|