Add compression to LineProtocolClient

[stmax82]

I added gzip compression to HTTP POST requests.

Quick tests have shown that it reduces Content-Length down to 50% (for short single point requests) and down to <10% (for large multi-point requests).

Compression can be enabled using an optional parameter of the LineProtocolClient constructor.
Default is off so the behavior should be the same as before.

[stmax82]

@bednar @nblumhardt could we get updates for the open pull requests please?

[nblumhardt]

@stmax82 I'm no longer a maintainer, here, sorry.

[bednar]

Hi @stmax82,

thanks for your PR.

Could you please update CHANGELOG.md and add unit tests to cover your changes?

Regards

[AppVeyorBot]

✅ Build influxdb-csharp 13 completed (commit bb2babbb26 by @stmax82)

[AppVeyorBot]

✅ Build influxdb-csharp 14 completed (commit 1bd9ce4fdc by @stmax82)

[AppVeyorBot]

✅ Build influxdb-csharp 15 completed (commit 54b0ed1d55 by @stmax82)

[stmax82]

Hi @bednar,

Could you please update CHANGELOG.md and add unit tests to cover your changes?

done - I updated the changelog and added a few tests for the LineProtocolClient with and without compression.

[AppVeyorBot]

✅ Build influxdb-csharp 16 completed (commit 4902a06e78 by @stmax82)

[AppVeyorBot]

✅ Build influxdb-csharp 17 completed (commit aad4b8024e by @bednar)

[bednar]

LGTM

[bednar]

Hi @stmax82 ,

The issue is fixed in 1.2.0 milestone.

If you would like to use a preview version use our nightly build: InfluxDB.LineProtocol 1.2.0-dev-00018.

Regards