libpq 6.0.1

Safe binding for libpq
Documentation 
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impl Connection {
    /**
     * Return true if GSSAPI encryption is in use
     */
    pub fn gss_enc_in_use(&self) -> bool {
        unsafe { pq_sys::PQgssEncInUse(self.into()) != 0 }
    }

    /**
     * Returns GSSAPI context if GSSAPI is in use
     *
     * # Safety
     *
     * This function returns a `void*` pointer.
     */
    pub fn gss_context(&self) -> *const std::ffi::c_void {
        unsafe { pq_sys::PQgetgssctx(self.into()) }
    }

    /**
     * Returns `true` if the connection authentication method used GSSAPI. Returns `false` if not.
     *
     * See
     * [PQconnectionUsedGSSAPI](https://www.postgresql.org/docs/16/libpq-status.html#LIBPQ-PQCONNECTIONUSEDGSSAPI).
     */
    #[cfg(feature = "v16")]
    pub fn used_gssapi(&self) -> bool {
        unsafe { pq_sys::PQconnectionUsedGSSAPI(self.into()) != 0 }
    }
}