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I'm running a Tezos network locally using babylonnet.sh. Works fine, can query for example ./babylonnet.sh client list known addresses. Also works in browser for example http://127.0.0.1:8732/chains/main/blocks/head.

When I try and run a local server, and connect I get a cors error:

localhost/:1
Failed to load http://localhost:8732/chains/main/blocks/head/context/contracts/tz1ZQu5ZwCBP6QeTDwkrUHiUBzHtXi9gFqGF/balance
: No 'Access-Control-Allow-Origin' header is present on the requested resource.
Origin 'http://localhost:8000' is therefore not allowed access.

I can't see how to set the cors using babylonnet.sh docker

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The babylonnet.sh script accepts node options. You can inspect the node options via tezos-node run --help. The option you're looking for is:

--cors-origin=ORIGIN: CORS origin allowed by the RPC server via Access-Control-Allow-Origin; may be used multiple times

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  • Thanks! I got it working using this: ./babylonnet.sh start --rpc-port 127.0.0.1:8732 --cors-origin=http://localhost:8000 --cors-origin=node:8732 --cors-origin=localhost:8732. Just adding localhost:8000 didn't work because some of the containers were using node:8732. But great stuff, I can start building now
    – Mark Robson
    Feb 3, 2020 at 13:21
  • Also, I ran --help and could't find reference to cors. I can't find a reference on the docs too. Am I missing something? If it is missing it might be worth doing a pr. I'll look into that if so
    – Mark Robson
    Feb 3, 2020 at 13:22
  • I'm guessing you're looking in the script's help, but this is located in the help of tezos-node config. I think with the script you can use ./babylonnet.sh shell tezos-node config --help to access this.
    – Tomáš Zemanovič
    Feb 4, 2020 at 11:33

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