TLSEXT_TYPE_pre_shared_key
case TLSEXT_TYPE_pre_shared_key:
#define TLSEXT_TYPE_psk TLSEXT_TYPE_pre_shared_key
.type = TLSEXT_TYPE_pre_shared_key,
if (type == TLSEXT_TYPE_pre_shared_key || type == TLSEXT_TYPE_key_share)
if (tlsext_extension_seen(s, TLSEXT_TYPE_pre_shared_key)) {