Distance is Not An Issue
“For though I am absent in the flesh, yet am I with you in the spirit, rejoicing and seeing your order, and the steadfastness of your faith in Christ.” (Colossians 2:5 WEB)
At that time, there was no Internet technology. There was no way to hop on a Zoom online conference call to speak to the churches. Instead, the apostle Paul saw visions of the churches in his spirit, and that is how he could see their order and steadfastness of faith. Having the Holy Spirit in us is like being connected to the Internet. We are connected to all the knowledge and power that God has.
Nowadays, the local church that I attend is not allowed to hold in-person church services due to government regulations. As a result, all services are held through online broadcast instead.
Although I miss sitting in the physical services, worshipping the Lord together with other believers, I believe that online services are no less powerful than in-person ones.
Many people are more comfortable with ‘the human touch’, such as receiving prayer in person, having a pastor to place his hand upon them while praying, but this physical contact is actually not absolutely necessary.
In His second miracle, Jesus demonstrated that the power of the Holy Spirit is not limited by distance.
“Jesus came therefore again to Cana of Galilee, where he made the water into wine. There was a certain nobleman whose son was sick at Capernaum. When he heard that Jesus had come out of Judea into Galilee, he went to him, and begged him that he would come down and heal his son, for he was at the point of death. Jesus therefore said to him, “Unless you see signs and wonders, you will in no way believe.” The nobleman said to him, “Sir, come down before my child dies.” Jesus said to him, “Go your way. Your son lives.” The man believed the word that Jesus spoke to him, and he went his way. As he was now going down, his servants met him and reported, saying “Your child lives!” So he inquired of them the hour when he began to get better. They said therefore to him, “Yesterday at the seventh hour, the fever left him.” So the father knew that it was at that hour in which Jesus said to him, “Your son lives.” He believed, as did his whole house. This is again the second sign that Jesus did, having come out of Judea into Galilee.” (John 4:46-54 WEB)
Jesus was in Cana, while the sick boy was in Capernaum. Just by speaking the words “your son lives” in faith, the power of the Holy Spirit healed the boy from a long distance away. Jesus did not have to lay hands on the child in order for him to be healed.
The nobleman initially thought that Jesus had to go to his house before the son could be healed. However, when Jesus released the words, “Go your way, your son lives,” the nobleman believed, and that was enough to receive the healing in proxy for his son.
We know that the nobleman believed because he met Jesus at the seventh hour (between 1 - 2pm). Cana and Capernaum are about 25 miles apart (about 6 - 8 hours walking distance) so if the nobleman set off immediately, he could be back home the same day at night to check on his son.
However, we see that the nobleman only spoke to his servant the next day. This means that the nobleman stayed at an inn or something for a night, and trusted that his son had been healed. If he had been unbelieving, he would have rushed home right away so as not to miss his son’s last moments, since he was “at the point of death”.
There are other long-distance healing miracles like this one, such as Jesus healing the Roman centurion’s servant, and Jesus healing the Syrophoenician woman’s demon-possessed daughter.
Continue to feed on the rhema word that God is releasing in season. Whether online or in-person, God’s power is still fully effective, and is not limited by the distance or channel.
As long as you hear or read, believing it, you shall experience the manifestation of the rhema word.
In the nobleman’s son’s case, the word in season was “your son lives”.
Earlier this year, I felt like I was coming down with a flu. I was sneezing repeatedly and my nose was dripping. I felt weak and irritable.
As I was praying in tongues and also asking Jesus to heal me and make me well, suddenly I heard these words in my spirit: “he grew strong through faith”.
Instantly, I knew that the Holy Spirit was talking about the apostle Paul’s description of Abraham in “Romans”.
“Yet, looking to the promise of God, he didn’t waver through unbelief, but grew strong through faith, giving glory to God, and being fully assured that what he had promised, he was also able to perform.” (Romans 4:21 WEB)
This was a rhema word for me to be healed. I grabbed it and repeatedly confessed and meditated on this, that I was growing strong through faith.
Abraham grew physically stronger through faith. He was already old and weak, but because he believed in the rhema word which God spoke to him, he and his wife Sarah experienced drastic youth renewal.
Their saggy skin, old internal organs, weak muscles, and dry bones were all renewed miraculously, allowing them to be fit for childbearing and even raising a child.
As I kept confessing “he didn’t consider the deadness of his own body, but he grew strong through faith,” I felt physically better and I did not sneeze or have runny nose anymore.
It was just a few words, but I emphasized on the “grew” and “strong”. Suddenly, each word was pregnant with life-giving power for my situation.
Faith comes through hearing the rhema word of Christ. What is He saying to you? As you are listening to a sermon video online, what is the key message or statement that jumps out at you and makes a strong impression in you heart? Sometimes the Lord whispers a verse or passage to you from within. Grab it and declare it for yourself because it carries the miracle-working power of God to turn your situation around!
Actionable Steps:
1. Get yourself plugged in to a ministry that preaches the Gospel. Listen to the new messages released by the pastor or preacher. If the Holy Spirit led you there, then you will benefit from believing the rhema words that is released through that ministry.
2. Train your mind to believe in the limitless reach of prayer. Pray for people who are far away from you, knowing that God will answer your prayers of faith, regardless of the distance between you and them.
3. When you receive a word in season (rhema word), write it down in your notebook or somewhere so that you do not forget. Revisit these words often and declare them, so long as you are still waiting for the manifestation.
- - -
This teaching is the 5th issue in my new Patreon Bible Study series called “The Way Forward: How to Thrive Amidst Change”. If you want to learn how you can still reign in life amidst lockdowns, strict regulations, and lots of bad news, join us as a “God Every Morning (GEM)” tier or above patron to receive it.
GEM patrons also receive daily devotionals by email, as well as all my eBooks! Become a patron on Patreon at this link: http://Patreon.com/miltongohblog
「go get proxy」的推薦目錄:
- 關於go get proxy 在 Milton Goh Blog and Sermon Notes Facebook 的最佳貼文
- 關於go get proxy 在 Taipei Ethereum Meetup Facebook 的最佳解答
- 關於go get proxy 在 戴資穎/ Tai Tzu Ying Facebook 的最讚貼文
- 關於go get proxy 在 How do I configure go command to use a proxy? - Stack ... 的評價
- 關於go get proxy 在 go-get-proxied - Cross platform proxy configurations - GitHub 的評價
- 關於go get proxy 在 Go get through socks5 proxy | iBlog 的評價
- 關於go get proxy 在 Golang proxy.NewProxy函數代碼示例- 純淨天空 的評價
- 關於go get proxy 在 How to Fix the "Windows Cannot Automatically Detect 的評價
go get proxy 在 Taipei Ethereum Meetup Facebook 的最佳解答
📜 [專欄新文章] Reason Why You Should Use EIP1167 Proxy Contract. (With Tutorial)
✍️ Ping Chen
📥 歡迎投稿: https://medium.com/taipei-ethereum-meetup #徵技術分享文 #使用心得 #教學文 #medium
EIP1167 minimal proxy contract is a standardized, gas-efficient way to deploy a bunch of contract clones from a factory.
1. Who may consider using EIP1167
For some DApp that are creating clones of a contract for its users, a “factory pattern” is usually introduced. Users simply interact with the factory to get a copy. For example, Gnosis Multisig Wallet has a factory. So, instead of copy-and-paste the source code to Remix, compile, key in some parameters, and deploy it by yourself, you can just ask the factory to create a wallet for you since the contract code has already been on-chain.
The problem is: we need standalone contract instances for each user, but then we’ll have many copies of the same bytecode on the blockchain, which seems redundant. Take multisig wallet as an example, different multisig wallet instances have separate addresses to receive assets and store the wallet’s owners’ addresses, but they can share the same program logic by referring to the same library. We call them ‘proxy contracts’.
One of the most famous proxy contract users is Uniswap. It also has a factory pattern to create exchanges for each ERC20 tokens. Different from Gnosis Multisig, Uniswap only has one exchange instance that contains full bytecode as the program logic, and the remainders are all proxies. So, when you go to Etherscan to check out the code, you’ll see a short bytecode, which is unlikely an implementation of an exchange.
0x3660006000376110006000366000732157a7894439191e520825fe9399ab8655e0f7085af41558576110006000f3
What it does is blindly relay every incoming transaction to the reference contract 0x2157a7894439191e520825fe9399ab8655e0f708by delegatecall.
Every proxy is a 100% replica of that contract but serving for different tokens.
The length of the creation code of Uniswap exchange implementation is 12468 bytes. A proxy contract, however, has only 46 bytes, which is much more gas efficient. So, if your DApp is in a scenario of creating copies of a contract, no matter for each user, each token, or what else, you may consider using proxy contracts to save gas.
2. Why use EIP1167
According to the proposal, EIP is a “minimal proxy contract”. It is currently the known shortest(in bytecode) and lowest gas consumption overhead implementation of proxy contract. Though most ERCs are protocols or interfaces, EIP1167 is the “best practice” of a proxy contract. It uses some EVM black magic to optimize performance.
EIP1167 not only minimizes length, but it is also literally a “minimal” proxy that does nothing but proxying. It minimizes trust. Unlike other upgradable proxy contracts that rely on the honesty of their administrator (who can change the implementation), address in EIP1167 is hardcoded in bytecode and remain unchangeable.
That brings convenience to the community.
Etherscan automatically displays code for EIP1167 proxies.
When you see an EIP1167 proxy, you can definitely regard it as the contract that it points to. For instance, if Etherscan finds a contract meets the format of EIP1167, and the reference implementation’s code has been published, it will automatically use that code for the proxy contract. Unfortunately, non-standard EIP1167 proxies like Uniswap will not benefit from this kind of network effect.
3. How to upgrade a contract to EIP1167 compatible
*Please read all the steps before use, otherwise there might have problems.
A. Build a clone factory
For Vyper, there’s a function create_with_code_of(address)that creates a proxy and returns its address. For Solidity, you may find a reference implementation here.
function createClone(address target) internal returns (address result){ bytes20 targetBytes = bytes20(target); assembly { let clone := mload(0x40) mstore(clone, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000) mstore(add(clone, 0x14), targetBytes) mstore(add(clone, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000) result := create(0, clone, 0x37) }}
You can either deploy the implementation contract first or deploy it with the factory’s constructor. I’ll suggest the former, so you can optimize it with higher runs.
contract WalletFactory is CloneFactory { address Template = "0xc0ffee"; function createWallet() external returns (address newWallet) { newWallet = createClone(Template); }}
B. Replace constructor with initializer
When it comes to a contract, there are two kinds of code: creation code and runtime code. Runtime code is the actual business logic stored in the contract’s code slot. Creation code, on the other hand, is runtime code plus an initialization process. When you compile a solidity source code, the output bytecode you get is creation code. And the permanent bytecode you can find on the blockchain is runtime code.
For EIP1167 proxies, we say it ‘clones’ a contract. It actually clones a contract’s runtime code. But if the contract that it is cloning has a constructor, the clone is not 100% precise. So, we need to slightly modify our implementation contract. Replace the constructor with an ‘initializer’, which is part of the permanent code but can only be called once.
// constructorconstructor(address _owner) external { owner = _owner;}// initializerfunction set(address _owner) external { require(owner == address(0)); owner = _owner;}
Mind that initializer is not a constructor, so theoretically it can be called multiple times. You need to maintain the edge case by yourself. Take the code above as an example, when the contract is initialized, the owner must never be set to 0, or anyone can modify it.
C. Don’t assign value outside a function
As mentioned, a creation code contains runtime code and initialization process. A so-called “initialization process” is not only a constructor but also all the variable assignments outside a function. If an EIP1167 proxy points to a contract that assigns value outside a function, it will again have different behavior. We need to remove them.
There are two approaches to solve this problem. The first one is to turn all the variables that need to be assigned to constant. By doing so, they are no longer a variable written in the contract’s storage, but a constant value that hardcoded everywhere it is used.
bytes32 public constant symbol = "4441490000000000000000000000000000000000000000000000000000000000";uint256 public constant decimals = 18;
Second, if you really want to assign a non-constant variable while initializing, then just add it to the initializer.
mapping(address => bool) public isOwner;uint public dailyWithdrawLimit;uint public signaturesRequired;
function set(address[] _owner, uint limit, uint required) external { require(dailyWithdrawLimit == 0 && signaturesRequired == 0); dailyWithdrawLimit = limit; signaturesRequired = required; //DO SOMETHING ELSE}
Our ultimate goal is to eliminate the difference between runtime code and creation code, so EIP1167 proxy can 100% imitate its implementation.
D. Put them all together
A proxy contract pattern splits the deployment process into two. But the factory can combine two steps into one, so users won’t feel different.
contract multisigWallet { //wallet interfaces function set(address[] owners, uint required, uint limit) external;}contract walletFactory is cloneFactory { address constant template = "0xdeadbeef"; function create(address[] owners, uint required, uint limit) external returns (address) { address wallet = createClone(template); multisigWallet(wallet).set(owners, required, limit); return wallet; }}
Since both the factory and the clone/proxy has exactly the same interface, no modification is required for all the existing DApp, webpage, and tools, just enjoy the benefit of proxy contracts!
4. Drawbacks
Though proxy contract can lower the storage fee of deploying multiple clones, it will slightly increase the gas cost of each operation in the future due to the usage of delegatecall. So, if the contract is not so long(in bytes), and you expect it’ll be called millions of times, it’ll eventually be more efficient to not use EIP1167 proxies.
In addition, proxy pattern also introduces a different attack vector to the system. For EIP1167 proxies, trust is minimized since the address they point to is hardcoded in bytecode. But, if the reference contract is not permanent, some problems may happen.
You might ever hear of parity multisig wallet hack. There are multiple proxies(not EIP1167) that refer to the same implementation. However, the wallet has a self-destruct function, which empties both the storage and the code of a contract. Unfortunately, there was a bug in Parity wallet’s access control and someone accidentally gained the ownership of the original implementation. That did not directly steal assets from other parity wallets, but then the hacker deleted the original implementation, making all the remaining wallets a shell without functionality, and lock assets in it forever.
https://cointelegraph.com/news/parity-multisig-wallet-hacked-or-how-come
Conclusion
In brief, the proxy factory pattern helps you to deploy a bunch of contract clones with a considerably lower gas cost. EIP1167 defines a bytecode format standard for minimal proxy and it is supported by Etherscan.
To upgrade a contract to EIP1167 compatible, you have to remove both constructor and variable assignment outside a function. So that runtime code will contain all business logic that proxies may need.
Here’s a use case of EIP1167 proxy contract: create adapters for ERC1155 tokens to support ERC20 interface.
pelith/erc-1155-adapter
References
https://eips.ethereum.org/EIPS/eip-1167
https://blog.openzeppelin.com/on-the-parity-wallet-multisig-hack-405a8c12e8f7/
Donation:
pingchen.eth
0xc1F9BB72216E5ecDc97e248F65E14df1fE46600a
Reason Why You Should Use EIP1167 Proxy Contract. (With Tutorial) was originally published in Taipei Ethereum Meetup on Medium, where people are continuing the conversation by highlighting and responding to this story.
👏 歡迎轉載分享鼓掌
go get proxy 在 戴資穎/ Tai Tzu Ying Facebook 的最讚貼文
Tzu Ying vs. Wang Yihan (中國王儀涵)
就在下一場,火力全開, 必勝決心!! #穎迷 們, 無論你們在何處!
奪冠軍資穎來,集氣加油就交給你們囉!
The determination to win, and fight on until the end.
One point at a time, Go.. go get the champion.^^page admin
完整網站連結方式就在合作金庫:
https://www.facebook.com/…/a.175612049245…/738499952956591/…
1.電視直播(01:00pm開始):MOD 173台博斯無限台
2.手機專用(01:00pm開始):
歡樂看 FainTV(Google Play 商店下載)收看博斯無限台
3. BWF Youtube:https://www.youtube.com/watch?v=OuIxTOqkBD4
(台灣的朋友請參考web Proxy方式喔!!)
4.官網:https://www.youtube.com/watch?v=yA0XDG4leW8
http://livestreaming.djarumbadminton.com/#!/channel/25966/1
5. 網路直播進入後,請在右邊畫面找「Badminton」,點選轉播場次播放即可
http://videostream.dn.ua/videopage/videoPage.php…
以下連結可觀看現場比分,屆時守在電腦前為球員們加油喔!!
PC:http://www.tournamentsoftware.com/livescore/scoreboard.aspx…
Mobile:http://www.tournamentsoftware.com/liv…/scoreboardhtml5.aspx…
賽程表:http://www.tournamentsoftware.com/sport/matches.aspx…
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