What happens to my outgoing txs in a block reorganization?

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Вы можете

заблокировать любого человека

, чтобы не позволить ему видеть публикации в вашем профиле, писать вам или добавлять вас в друзья. Если вы заблокируете кого-то из своих друзей, этот человек будет автоматически удален из вашего списка друзей.

Люди, которых вы заблокировали, не смогут:

Видеть материалы, которые вы публикуете в профиле.Отмечать вас в публикациях, комментариях или на фото.Приглашать вас на мероприятия или в группы.Начинать с вами переписку. Добавлять вас в друзья.

Если вы блокируете кого-то, вы также не сможете начать с этим человеком переписку и добавить его в друзья. Имейте в виду, что блокировка не гарантирует полного исключения общения или взаимодействия с этим человеком (например, в приложениях или группах) и распространяется только на Facebook.

Примечание. Если вы решите разблокировать кого-то из прежних своих друзей, это не значит, что вы снова автоматически станете друзьями. Если вы заблокировали друга, а потом разблокировали...

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Actually, yes.
Transactions sent on the networks are broadcast across the network instantly. This is why when someone sends you a Bitcoin payment to your Coinbase account, you can see it show up as "pending" right away. Other wallets and some Bitcoin clients can accept these 0 confirmation transactions.

The Coinbase wallet will wait until a transaction has 3 confirmations before marking it as "complete." Other wallets and services will wait for more or less confirmations. There is no arbitrary amount that Bitcoin says you have to follow. But the general rule is: the more confirmations a transaction has, the "safer" it is to accept it. I'm going to go way off on a tangent and get a bit technical, but here's one reason why:

Orphans

Miners (and probably more specifically, mining pools) are the entities in Bitcoin that submit blocks and confirm the transactions. But what happens if two miners submit a block at the same time? This happens more than you...

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Version: 0.8.1
OS & Version: osx 10.11.6
Node type: geth

I was running Ethereum Wallet 0.7.5 and updated to 0.8.1 some days ago. After the update, upon launching the app, it got unresponsive (unable to click on tabs, buttons).
Since I was past block 1920000, I figured I needed to resync and followed the instructions at https://github.com/ethereum/mist/releases

However, this did not solve the issue for me. I followed the instructions here: https://github.com/ethereum/wiki/wiki/Mist-Troubleshooting-Guide

Lauching geth manually I see the blocks being in sync:

I0726 11:37:40.823548 core/blockchain.go:963] imported 1 block(s) (0 queued 0 ignored) including 27 txs in 22.486712ms. #1955126 [f6e23b77 / f6e23b77] I0726 11:37:44.275576 core/blockchain.go:963] imported 1 block(s) (0 queued 0 ignored) including 0 txs in 3.468205ms. #1955127 [ec2945ba / ec2945ba] I0726 11:37:49.845139 core/blockchain.go:963] imported 1 block(s) (0 queued 0 ignored)...
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If you’re reading this post I assume that like many others, you sent a bitcoin transaction and was kind of confused as to why it’s still listed as “unconfirmed” or “pending” after a few hours or so.

I mean Bitcoin transactions are supposed to be instant right?

In this post I want to try and explain in a very basic way how a Bitcoin transaction works and why the fee that you attach to each transaction has a crucial role in how long it will take the transaction to go through the network.

Here’s what happens when you send Bitcoins to someone

Whenever you send someone Bitcoins, the transaction goes through different computers running the Bitcoin protocol around the world that make sure the transaction is valid. Once the transaction is verified it then “waits” inside the Mempool (i.e. in some sort of a “limbo” state).

It’s basically waiting to be picked up by a Bitcoin miner and entered into a block of transaction on the Blockchain. Until it is picked...

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Many iPhone owners expect that incoming call blocking is a built-in feature of the iPhone. Unfortunately, this is not the case. Such a feature is controlled at the provider level.

UPDATE: Now there are even more options to block calls and texts from incoming numbers on your iPhone. See the complete list here.

Furthermore, most providers fail to offer call blocking to their customers. Providers that do often charge an exorbitant rate for this feature, such as AT&T in the US which offers a service called "Smart Limits" which includes call blocking but comes at a pricey $5 per month.

There are a couple solutions/workarounds that you can implement:

1) For those of you that are jailbroken, there is an app called iBlacklist that will allow you to filter incoming calls and SMS text messages. This is not a free app, but at it's current price of $12.00 (one-time purchase), it can pay for itself fairly quickly vs. pricey provider solutions.

2) Don't block...

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Since you did not mention if this is programming specific, network or operating system specific I chose to assume it is meant on network level.

When you type in the address to the site you wish to see and press enter your machine/browser will first check if that domains IP address is cached somewhere either on browser level or operating system level. If not, it will try to resolve the IP address of that sites domain name by contacting a DNS server. Your operating system is either manually or automatically through DHCP configured with the IP address of one or more DNS servers which it can contact.

At some point in time the DNS server which was queried will reply with the IP address of the server/device associated with the domain name you entered. The TCP/IP packets can now be constructed and sent over the wire to the domain you entered to start communicating and transferring data back and forth to give you the content you asked...

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This is a pretty famous difference between Windows and Unix-like systems.

No matter what:

Each process has its own address space, meaning that there is never any memory being shared between processes (unless you use some inter-process communication library or extensions). The One Definition Rule (ODR) still applies, meaning that you can only have one definition of the global variable visible at link-time (static or dynamic linking).

So, the key issue here is really visibility.

In all cases, static global variables (or functions) are never visible from outside a module (dll/so or executable). The C++ standard requires that these have internal linkage, meaning that they are not visible outside the translation unit (which becomes an object file) in which they are defined. So, that settles that issue.

Where it gets complicated is when you have extern global variables. Here, Windows and Unix-like systems are completely different.

In the case of Windows...

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I block some common offenders, and rely on application intelligence to handle the rest. If you keep a close eye on things, you can spot issues pretty quickly.

Depends on the environment. If you have someone watching your firewall, and have some type of application intelligence, you can get away with some minimal restrictions.

I ALWAYS block port 25 outbound from anything but the Exchange server(s). Not many of my customers have been blacklisted, and the ones who have bypassed the controls. I also have been pulled in to block Dropbox, skydrive, and other file sharing platforms to keep people from exfiltrating data.

Beyond that, it's hard to block much else without some kind of dynamic subscription service that gives you visibility into where the ports are going. Good content filtering and application rules can save you a lot of administrative headaches. But, if you have a "Trust nobody Mr. Mulder" mentality, and the other controls aren't available to you,...

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That is kind of you to attempt to help, however, this is very frustrating as I'm not sure why I have given the impression that I am unware of what the detector procedures are.

I assure you, I can read and comprehend. That's why I bothered to include parts of the message one sees when this problem is encountered. I believe I was very clear in expressing the nature of the problem. What no one seems to be able to address is my REAL issue and that is very unfortunate. I cannot believe that I am the ONLY Verizon customer who has not experienced this, or who thinks that this appalling situation for paying customers who have done nothing wrong, does not concern them.

Again, the real issue is what happens AFTER one has sent the message PER the directions. The fact that there is a LIVE flesh and blood person who cannot seem to be able to read and comprehend content is the problem. That is their job. They are supposed to REVIEW messages as in read them, see what is in them...

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Here is what I would do:

For the domains using Google Apps or some other 3rd party email service, set the MX records appropriately for that domain's email service. I would find it very interesting if you emails were still being presented to that server if the MX records for the domain point elsewhere. That would mean some checking up on what email addresses are arriving at your server for further investigation.

For your Google Apps clients, if you find that your outgoing emails (sent from the server via the server in PHP or some other means) are not being delivered to email addresses ending in the same domain as the hostname, try this:

Postifx disable local delivery

An example of this would be the server whose hostname getbunch.com might not deliver email to jesse@getbunch.com because it thinks that that address should be local. In reality, it's not local. Disabling the local delivery will force the server to send your email to the right...

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I found a site that has a useful list. I suspect you were missing a few (like 8080, which is commonly used). You can use a tool like netstat to see which ports you are using at any given time. I think

netstat -u netstat -t

may do it, but there is probably something better out there! Be careful what options you pass to netstat because it also lists internal sockets. Above, the -u is for udp and the -t is for tcp ports.

You may also try searching to see if someone has created a ufw application profile and set ufw to allow the specified profile using sudo ufw allow Name

Finally, if something breaks, you can check your ufw logs to see what you need to add to make it work. Just keep in mind that other programs may need other ports. If you use an email client for example, you will have to allow things like pop3, imap and...

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Block outgoing calls is a handy app to stop unwanted calls by your children or any other person

- Two operation mode: block list vs accept list
- Privacy protection: custom toast message, password protected
- Handy widgets to toggle.
- Very small app: 100kb

Use case 1 - Give your phone to your toddler and he makes phone calls randomly.

Use case 2 - Parental control: allow your child to call people in a pre-selected list. Lock down app with password.

Use case 3 - Give your phone to some one and don't want they make phone calls, quick toggle by widget is the best option

Support: http://forum.xda-developers.com/search.php?searchid=180673451

#block call, blacklist

Блокировать исходящие вызовы удобное приложение, чтобы остановить нежелательные звонки вашим детям или любым другим лицом

- Два режима работы: список блока против принять список
- Защита персональных данных: пользовательское сообщение тост, защищенных...

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Facebook is a fine line between staying connected to those you want to, and revealing too much information (TMI) to others.

In today's world, people are more connected through Facebook than any other way. The network of friends only seems to increase day by day. The flip side of this is, people you don't even know, or the unwanted ones, are getting to see all your activities and pictures online. So what can you do? Block them of course, since you wouldn't want to curtail your fun time online because of these pesky individuals, right!

Blocking Someone on Facebook


How to Do It

There are three simple ways in which to block an individual on Facebook:

You can block someone by going to the 'Block List' on the 'Privacy Settings' page, and enter the name or email address of the person you wish to block. Or you even can visit their profile and click on the tab 'Report/Block this person' present on their profile page (timeline). The third way to block someone...
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There are several levels of "down". The situation in New York is unprecedented right now -- and if we have truly lost power at this level, you will not see anything if you try and connect to a Squarespace site (like typing in http://www.invaliddomainasdfasdfasdf.com). Peer 1 has many, many redundant systems in place to prevent this from happening -- but as you can see with the situation involving Sandy, aside from being distributed geographically, there is only so much one site can do to stop the repercussions of a natural disaster.

When we have internal system errors, but we still have network connectivity (it seems that some of you saw one of these earlier -- there was a 1-2 minute issue earlier related to us shutting systems off to attempt to reduce power and to save fuel), you will see a black screen with a "Something Went Wrong" -- that indicates we've logged the error. In all but very isolated/rare situations, we catch these errors before any customer reports...

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Java theory and practice

Learn how to avoid thread leakage in server applications

Brian Goetz
Published on September 01, 2002

Content series:

This content is part # of # in the series:

https://www.ibm.com/developerworks/library/?series_title_by=java+theory+and+practice

This content is part of the series:

Stay tuned for additional content in this series.

When the main thread in a single-threaded application throws an uncaught exception, you are likely to notice because the stack trace is printed on the console (and because the program stops). But in a multithreaded application, especially one that runs as a server and is not attached to a console, thread death may be a less noticeable event, resulting in partial system failures that can cause confusing application behavior.

In July's installment of Java theory and practice, we looked at thread pools, and examined how an...

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WARNING: This post contains sexually explicit language. Please read on at your own discretion.

"Jenny! I was supposed to meet you at the door naked!" the gorgeous woman standing before me said before flinging her arms around me. She was almost naked, wearing a thin, white tank that barely covered her behind. "I'm Carlin," she said.

Carlin Ross is the business partner of famed sex educator Betty Dodson. Betty Dodson, of course, is the author of the insanely bestselling book Sex for One, and the consummate orgasm and masturbation guru since the '70s. You might call her a founding mother of women's sexual liberation. I certainly would.

"Come on, let's get undressed," Carlin said, like it was the most normal thing in the world. And if you're there for one of Betty's famous "BodySex" workshops, it is. I followed her back to the vestibule at the entryway of Betty's Madison Avenue apartment, and I slipped out of my yoga pants and tee as she slipped out of her...

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It sounds a little fishy to me.

First off, the fact that it is e-mail, imo, doesn't constitute ample warning. In an age of spam filters and malware protection, such an e-mail can easily slip through the cracks. One could just as easily claim that they didn't get the warning because, well, they didn't. Legally speaking, there's no proof of receipt. I'm sure that companies try it with e-mail all of the time, but proper notification is typically done the old fashioned way. That can be via hand delivery or certified mail. A formal C&D through e-mail seems legally sketchy, at best.

Second, this could be a ht & run cash grab scam. IOW, they can claim that your studio wronged them by stealing their software and demand that you pay a fine or else they'll take you to court and make you pay even more. Obviously, the prospect of that would scare the hell out of some people. They could be hoping this idle threat might be sufficient enough so that you'd send them cash. Totally...

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The second verse for “Public Service Announcement” was almost entirely unrelated to the first verse. I wrote the second verse, which opens with the lyrics, I’m like Che Guevara with bling on, I’m complex, as a response to the journalist. When someone asked me at the time of the Unplugged show why it was that I wore the Che T-shirt, I think I said something glib like, “I consider myself a revolutionary because I’m a self-made millionaire in a racist society.” But it was really that it just felt right to me. I knew that people would have questions. Some people in the hip-hop world were surprised by it. There are rappers like Public Enemy and Dead Prez who’ve always been explicitly revolutionary, but I wasn’t one of them. I also wasn’t a Marxist like Che—the platinum Jesus piece made that pretty...

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In the first of an eight week series of articles about how technology is changing our cities, Jane Wakefield asks whether a city that is plugged into the network is vulnerable to hackers.

The nightmare scenario that has had government leaders and city bosses biting their fingernails for decades has come true. Chicago has been hacked.

The traffic lights have ceased to function, leaving roads in chaos. The city has no electricity. It is in the hands of the hackers.

If the scenario sounds far-fetched, you'd be right - for now at least.

It is in fact just a scene from recently released video game Watch Dogs, which features a near-future Chicago in which players control Aiden Pearce, a highly skilled hacker who can break into the urban operating system that controls the infrastructure of the city.

But as cities become ever more connected to the network, with sensors in everything, including the roads, traffic lights and even the bins, could it really...

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