Ingest client close() hangs if there is no internet connection

If you create a SnowflakeStreamingIngestClient and then a channel and start sending data, then "pull the chord" or kill your internet and then try and clean up, the SnowflakeStreamingIngestClient.close() call hangs.

       // Close all channels
        if (this.outputChannels != null) {
            for (var channel : this.outputChannels.entrySet()) {
                try {
                    channel.getValue().close();
                } catch (Exception ignored) {
                }
            }
            this.outputChannels.clear();
        }

        // Close the client
        if (this.streamClient != null) {
            try {
                if (!this.streamClient.isClosed()) {
                    // This appears to hang indefinitely. As soon as I recover internet it works
                    this.streamClient.close();
             |
            } catch (Exception ignored) {
            }

            this.streamClient = null;
        }

Start at SnowflakeStreamingIngestClient.close() and the shown streamClient.close() call; reproduce the issue by stopping internet access while a channel is sending data, then attempting cleanup. Done means client.close() returns without waiting indefinitely when the connection is unavailable.