Summary

Apollo iOS v2.0.3's MultipartResponseDeferParser throws ParsingError.cannotParseChunkData when handling multipart GraphQL responses with @defer if the server sends the close delimiter (--graphql--\r\n) as a separate HTTP chunk.

This is a change from Apollo iOS v1, which handled this case with a check for chunk.isDashBoundaryPrefix in MultipartResponseParsingInterceptor.

Version

2.0.3

Steps to reproduce the behavior

1. Use Apollo iOS SDK v2.0.3
2. Execute a GraphQL query with @defer directive that returns a multipart response
3. Server sends multipart response where the final close delimiter --graphql--\r\n arrives as its own separate chunk

Logs

/// Raw response from Proxyman with json payload redacted. 


HTTP/1.1 200 OK
Content-Type: multipart/mixed;boundary="graphql";deferSpec=20220824
Transfer-Encoding: chunked
Connection: keep-alive


--graphql
content-type: application/json

{"data":{},"hasNext":true}
--graphql
content-type: application/json

{"hasNext":false,"incremental":[]}
--graphql--

Anything else?

No response