[Bug]: DTLS fragmentation is broken

[Frauschi]

Contact Details

tobias.frauenschlaeger@oth-regensburg.de

Version

master

Description

When enabling DTLS with fragmentation support, the unit tests fail. More specifically, the test 972: test_dtls_frag_ch fails according to the test-suite.log.

Reproduction steps

./configure --enable-all --enable-asn=template --enable-dtls13 --enable-dtls-frag-ch
make
make check

Relevant log output

972: test_dtls_frag_ch                                   :
ERROR - tests/api.c line 83190 failed with:
    expected: wolfSSL_get_error(ssl_c, -1) == WOLFSSL_ERROR_WANT_READ
    result:   -328 != 2

 failed (  0.00295)

[julek-wolfssl]

Thank you @Frauschi for the report. The issue was that ECH and the ciphersuites were pushing the ClientHello message in the test over the fragmentation limit. #7914 fixes this.