Package org.a2aproject.sdk.jsonrpc.common.wrappers

Class SendStreamingMessageRequest

java.lang.Object

org.a2aproject.sdk.jsonrpc.common.wrappers.A2ARequest<T>

org.a2aproject.sdk.jsonrpc.common.wrappers.StreamingJSONRPCRequest<MessageSendParams>

org.a2aproject.sdk.jsonrpc.common.wrappers.SendStreamingMessageRequest

All Implemented Interfaces:

A2AMessage

public final class SendStreamingMessageRequest
extends StreamingJSONRPCRequest<MessageSendParams>

JSON-RPC request to initiate a new task with streaming event delivery.

This request starts agent processing for a message and immediately returns a stream of events representing the agent's progress and responses. Unlike SendMessageRequest, this enables real-time progress updates as the agent processes the request.

The streaming response provides StreamingEventKind events such as task updates, artifact additions, and status changes as they occur, rather than waiting for final completion.

This class implements the JSON-RPC message/stream method as specified in the A2A Protocol.

See Also:

• for non-streaming message delivery
• for parameter structure
• for event types in streaming responses
• A2A Protocol Specification

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	SendStreamingMessageRequest.Builder	Builder for constructing SendStreamingMessageRequest instances.

Field Summary

Fields inherited from class org.a2aproject.sdk.jsonrpc.common.wrappers.A2ARequest

id, jsonrpc, method, params

Fields inherited from interface org.a2aproject.sdk.jsonrpc.common.wrappers.A2AMessage

JSONRPC_VERSION

Constructor Summary

Constructors

Constructor	Description
SendStreamingMessageRequest(Object id, MessageSendParams params)	Constructs request with ID and parameters.
SendStreamingMessageRequest(String jsonrpc, Object id, MessageSendParams params)	Constructs request with all parameters.

Method Summary

Modifier and Type	Method	Description
static SendStreamingMessageRequest.Builder	builder()	Create a new Builder

Methods inherited from class org.a2aproject.sdk.jsonrpc.common.wrappers.A2ARequest

getId, getJsonrpc, getMethod, getParams, validateAndSetJsonParameters

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

SendStreamingMessageRequest

public SendStreamingMessageRequest(String jsonrpc,
 Object id,
 MessageSendParams params)

Constructs request with all parameters.

Parameters:

jsonrpc - the JSON-RPC version

id - the request ID

params - the request parameters

SendStreamingMessageRequest

public SendStreamingMessageRequest(Object id,
 MessageSendParams params)

Constructs request with ID and parameters.

Parameters:

id - the request ID

params - the request parameters

Method Details

builder

public static SendStreamingMessageRequest.Builder builder()

Create a new Builder

Returns:

the builder