sessions.create() with requestSource.raw doesn't base64-encode the raw field

[dedeoglukaan]

Description

When creating a replay session from a raw HTTP request using client.replay.sessions.create({ requestSource: { raw, connection } }), the SDK passes the raw string directly to the GraphQL mutation. However, Caido's GraphQL schema expects the raw field inside RequestRawInput to be a Blob type (base64-encoded string).

This causes the following error:

Error: [GraphQL] Expected input type "Blob", found "GET / HTTP/1.1\r\n...". 
(occurred while parsing "RequestRawInput") 
(occurred while parsing "RequestSourceInput") 
(occurred while parsing "CreateReplaySessionInput")

Root Cause

Looking at the SDK source, mapRequestSource() passes requestSource.raw through as-is:

const mapRequestSource = (requestSource) => {
  if ("id" in requestSource) return { id: requestSource.id };
  return { raw: {
    connectionInfo: requestSource.connection,
    raw: requestSource.raw  // <-- not encoded
  }};
};

But replay.send() correctly uses encodeBlob() on the raw field:

raw: encodeBlob(options.raw)

So send() works fine, but sessions.create() with a raw source doesn't.

Workaround

Manual base64 encoding via client.graphql.mutation():

const result = await client.graphql.mutation(CREATE_REPLAY_SESSION_RAW, {
  input: {
    kind: "HTTP",
    requestSource: {
      raw: {
        connectionInfo: { host, port, isTLS: tls },
        raw: Buffer.from(rawRequest).toString("base64"),
      },
    },
  },
});

Environment

• @caido/sdk-client: 0.4.0
• Caido: 0.57.0

Expected Behavior

sessions.create({ requestSource: { raw: "GET / HTTP/1.1\r\n...", connection: {...} } }) should automatically base64-encode the raw field before sending to GraphQL, similar to how replay.send() handles it.