Do not use 0.0.0.0 for client connection, use real hostname instead

[tashoyan]

Solves #1414

[ghost]

It looks like @tashoyan hasn't signed our Contributor License Agreement, yet.

The purpose of a CLA is to ensure that the guardian of a project's outputs has the necessary ownership or grants of rights over all contributions to allow them to distribute under the chosen licence.
Wikipedia

You can read and sign our full Contributor License Agreement here.

Once you've signed reply with [clabot:check] to prove it.

Appreciation of efforts,

clabot

[tashoyan]

@rayokota, @xiaoyali97 - would you like to review this PR? The modification is trivial, but it solves a quite annoying problem.

[tashoyan]

@rayokota @Clarence97 - would you review this PR please? It would be great to close this annoying issue.

[tashoyan]

[clabot:check]

[cla-assistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}