Fix DNS resolution failure on Linux when host is an IP address (#50)#51

CritasWang wants to merge 1 commit intoapache:mainapache/iotdb-client-csharp:mainfrom

CritasWang:fix/issue-50-dns-hostentryCritasWang/iotdb-client-csharp:fix/issue-50-dns-hostentryCopy head branch name to clipboard