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I ran the below command, which I understood should've connected me to the mainnet:

curl -X POST \ -H "Content-Type: application/json" \ --data '{"jsonrpc": "2.0", "id": 1, "method": "eth_blockNumber", "params": []}' \ "mainnet.infura.io/my-token

but there appears to continue to be some issue.

  • Any idea why?
  • Have I made some syntax error, or am I supposed to be swapping out an actual block number for eth_blockNumber, or similar?

To make sure it's clear that I didn't make the following mistake, I did swap out 'my-token' for the 20 digit token Infura generated for me.

Thanks so much!

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  • What type of issue do you face? Can you add some error code?
    – Roman Frolov
    Commented Mar 5, 2018 at 19:14
  • Hi Roman - Thanks for the response. Yes! When I attempt to run a script that I need to get working today, I get the following: Error: CONNECTION ERROR: Couldn't connect to node mainnet.infura.io. at Object.InvalidConnection (/home/ubuntu/server/node_modules/web3/lib/web3/errors.js:31:16) at HttpProvider.send (/home/ubuntu/server/node_modules/web3/lib/web3/httpprovider.js:87:18) at RequestManager.send (/home/ubuntu/server/node_modules/web3/lib/web3/requestmanager.js:58:32) at Eth.send [as getBalance] ....etc.
    – Rachel
    Commented Mar 5, 2018 at 19:22

1 Answer 1

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Make sure to use HTTPS. This works:

curl -X POST -H "Content-Type: application/json" -d '{"jsonrpc": "2.0", "id": 1, "method": "eth_blockNumber", "params": []}' https://mainnet.infura.io/my-token
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