Start Ethereum node
Publish: 2021-05-09 14:31:02
1. curl方法，file_get_contents,
2. Yes, but it is better to use overseas servers. In addition, the server configuration should be medium or above.
3. Generally speaking, undefined index is the exact writing problem in the process of writing. Notice generally prompts for errors that are not directly related to the execution of code, but don't forget that notice sometimes returns some rendant error information
4. How many account addresses can an Ethereum node have at most
A: generally, there is only one account address, otherwise there will be an error! blockchain itself is unique. If there are multiple account addresses on one node, it violates the fundamental principle of blockchain!
A: generally, there is only one account address, otherwise there will be an error! blockchain itself is unique. If there are multiple account addresses on one node, it violates the fundamental principle of blockchain!
5.
Generally speaking, the steps of deploying smart contract are as follows:
- start an Ethereum node (such as geth or testrpc)
- use Solc to compile smart contracts=& gt; Get the binary code
- deploy the compiled contract to the network This step will consume Ethernet currency, and you need to use the default address or specified address of your node to sign the contract.)=& gt; Get the blockchain address and ABI of the contract (JSON representation of the contract interface, including variables, events and callable methods) The author confused ABI with contract interface here. ABI is the binary representation of the contract interface.)
- use the JavaScript API provided by web3.js to call the contract Depending on the type of call, it may consume Ethernet currency.)
6. There is no inevitable relationship between whether the virtual currency will disappear or not and whether it can not be used on the third-party platform. Online third-party trading platform can only say that this kind of currency has another platform for trading, which shows that this kind of currency is more reliable
Ruitai coin has not been launched on the third-party platform, but it is rumored that it will also be launched on the third-party platform.
Ruitai coin has not been launched on the third-party platform, but it is rumored that it will also be launched on the third-party platform.
7. There is no problem at all, but relatively speaking, we must buy some reliable ones, because we must pay attention to them.
8. < UL >
try to set your TCP / IP protocol to automatic acquisition state. Method: right click Network Neighborhood - properties - right click & quot; Local connection & quot; Properties - double click & quot; Internet Protocol TCP / IP & quot- IPX is the bottom layer protocol of NetWare. It is only responsible for the movement of data in the network. It does not guarantee the success of data transmission, nor does it provide error correction
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