Describe the bug

The certificate chain buffer is null and zero length with PORTABLE_CERTIFICATES when the server should have sent its certificate chain.

Affected OS

• All
• Windows Server 2022
• Windows 11
• Windows Insider Preview (specify affected build below)
• Ubuntu
• Debian
• Other (specify below)

Additional OS information

No response

MsQuic version

main

Steps taken to reproduce bug

1. Create server with certificate that has a chain
2. Create client with the following flags INDICATE_CERTIFICATE_RECEIVED, NO_CERTIFICATE_VALIDATION, USE_PORTABLE_CERTIFICATES (on Linux), CLIENT
3. Do a handshake between client and server.

Expected behavior

the INDICATE_PEER_CERTIFICATE event on the client should have a buffer with a PKCS7 containing the server's certificate chain, minus the leaf cert.

Actual outcome

The INDICATE_PEER_CERTIFICATE event fires with no server certificate chain; the buffer is null and the length is 0.

Additional details

No response