BIOMethCtrlCallback

Undocumented in source but is binding to C. You might be able to learn more by searching the web for its name.
version(!VibeNoSSL && Have_openssl)
extern (C) nothrow
static if(OPENSSL_VERSION_AT_LEAST(1, 1, 0))
alias BIOMethCtrlCallback = c_long function
(
BIO*
,
int
,
c_long
,
void*
)

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