PostgreSQLMessage+PasswordMessage.swift

extension PostgreSQLMessage {
    /// Identifies the message as a password response. Note that this is also used for
    /// GSSAPI and SSPI response messages (which is really a design error, since the contained
    /// data is not a null-terminated string in that case, but can be arbitrary binary data).
    struct PasswordMessage {
        /// The password (encrypted, if requested).
        var password: String
    }
}

// MARK: Serialize

extension PostgreSQLMessage.PasswordMessage {
    /// Serializes this message into a byte buffer.
    func serialize(into buffer: inout ByteBuffer) {
        buffer.write(nullTerminated: password)
    }
}