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maxmind / mmdbwriter

Go library for writing MaxMind DB (mmdb) files
Apache License 2.0
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Is there any way to write the same CIDR to different countries in customized Country.mmdb file? #44

Closed Loyalsoldier closed 2 years ago

Loyalsoldier commented 2 years ago

I want the same CIDR, eg 1.0.0.1/24 to be added to different countries US and CN in my customized Country.mmdb file.

How can I do that?

oschwald commented 2 years ago

I am not quite sure what you are asking. Each leaf node has a single record. It isn't possible for a node to have two records. However, that record may contain whatever you want, including an array of country codes.

Loyalsoldier commented 2 years ago

Sorry for the confusion.

I use GeoLite2-Country.mmdb file for web traffic routing. If the destination IP belongs to US, that traffic goes through the first proxy; if belongs to Google, it goes through the second proxy.

But the software I use can only read and parse GeoLite2-Country.mmdb file, not the GeoLite2-ASN.mmdb file. To achieve my use case, I need to extend the official GeoLite2-Country.mmdb file to include Google's CIDRs to a fake country called Google.

As we all know, the IP 8.8.8.8 belongs to Google and US. Is there any way to keep 8.8.8.8 both in US and the fake country Google?

oschwald commented 2 years ago

I would recommend just adding a new field to the record with the extra information you want. The country code is a string, not an array, but there is nothing stopping you from adding a new key with different data. You could have an array of countries as I mentioned in my first message, although that would break compatibility with GeoLite2-Country.

Loyalsoldier commented 2 years ago

thanks