Function buildEnvelope

src/proxy/envelope.js:21–34

* Build a GEP-A2A protocol envelope around a payload. * * Strict hub endpoints (/a2a/hello, /a2a/fetch, /a2a/validate, ...) run * isValidProtocolMessage server-side and reject bare bodies with * 400 invalid_protocol_message. Lenient endpoints such as * /a2a/assets/search accept raw bodies and m

(messageType, payload, senderId)

 * @returns {object} Full protocol envelope
 */
function buildEnvelope(messageType, payload, senderId) {
  if (!messageType || typeof messageType !== 'string') {
    throw new Error('buildEnvelope: messageType is required');
  }
  return {
    protocol: PROTOCOL_NAME,
    protocol_version: PROTOCOL_VERSION,
    message_type: messageType,
    message_id: 'msg_' + Date.now() + '_' + crypto.randomBytes(4).toString('hex'),
    sender_id: senderId || null,
    timestamp: new Date().toISOString(),
    payload: payload || {},
  };
}

/**
 * Wrap `body` in a GEP-A2A envelope unless it already is one.