ngx::ffi

Function SSL_CTX_set_srp_username_callback

Source 
pub unsafe extern "C" fn SSL_CTX_set_srp_username_callback(
    ctx: *mut ssl_ctx_st,
    cb: Option<unsafe extern "C" fn(_: *mut ssl_st, _: *mut i32, _: *mut c_void) -> i32>,
) -> i32