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In the go-ethereum codebase, there's a type called CallMsg that's used in a number of cases, and the documentation says

// input data, usually an ABI-encoded contract method invocation

and it takes a byte array. As far as I can tell, if you want to interact with contracts programmatically with Go, using this type is usually involved. Given a Solidity contract, how would I use this to invoke a method on that Solidity contract?

  • Well I can't answer my own question yet but I've determined that this field should be compiled bytecode. I haven't figured out how to use it specifically yet though. – Ryan Faulhaber Nov 14 '17 at 0:25
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The way to get the bytecode you need, given a Solidity contract, would be to use solc with the --bin option on your contract. Then it will output the bytecode you need. Additionally, abigen can handle this for you by using the --sol flag to generate Java or Go code that uses this bytecode.

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