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Diffstat (limited to 'accounts/abi/bind/backends/remote.go')
| -rw-r--r-- | accounts/abi/bind/backends/remote.go | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/accounts/abi/bind/backends/remote.go b/accounts/abi/bind/backends/remote.go index 9b3647192..d903cbc8f 100644 --- a/accounts/abi/bind/backends/remote.go +++ b/accounts/abi/bind/backends/remote.go @@ -111,6 +111,26 @@ func (b *rpcBackend) request(method string, params []interface{}) (json.RawMessa return res.Result, nil } +// HasCode implements ContractVerifier.HasCode by retrieving any code associated +// with the contract from the remote node, and checking its size. +func (b *rpcBackend) HasCode(contract common.Address, pending bool) (bool, error) { + // Execute the RPC code retrieval + block := "latest" + if pending { + block = "pending" + } + res, err := b.request("eth_getCode", []interface{}{contract.Hex(), block}) + if err != nil { + return false, err + } + var hex string + if err := json.Unmarshal(res, &hex); err != nil { + return false, err + } + // Convert the response back to a Go byte slice and return + return len(common.FromHex(hex)) > 0, nil +} + // ContractCall implements ContractCaller.ContractCall, delegating the execution of // a contract call to the remote node, returning the reply to for local processing. func (b *rpcBackend) ContractCall(contract common.Address, data []byte, pending bool) ([]byte, error) { |