[GitHub] [skywalking] dmsolr commented on issue #4509: Provide the data transmission protocol document

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dmsolr commented on issue #4509: Provide the data transmission protocol document
URL: https://github.com/apache/skywalking/pull/4509#issuecomment-599019398
 
 
   > Some suggestions inline
   > 
   > As for the formats, I forgot to reply to the mailing list thread,
   > 
   > > Cross Process Correlation Header key is `sw7-correlation`. The value is (string key)-(string value) table in `Base64` encoded JSON format.
   > 
   > I'm wondering whether it's worthwhile to make it JSON, I remember @mrproliu your first suggestion is to encode the `key` and `value` respectively, and concatenate them with `:`, which IMO is good enough and efficient, JSON is more human readable but cost more bandwidth
   
   I have a raw idea. Format: [key.length][key][value.length][key]<[key.length][key][value.length][key]....>
   
   We can use a character to represnet it's length.

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