майнкрафт ошибка java net socketexception network is unreachable

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java.net.SocketExecption: Network is unreachable

I have a server running on a Mac using Craftbukkit. Recently, my computer’s graphics card had to be replaced; and ever since, my friends could not connect to the server. Only I can, using «localhost». When anybody else tries to connect, they get the following error message: «Failed to connect to the server java.net.SocketExecption: Network is unreachable».

Please help! Btw, I tried restarting the server, my wireless connection, and even my computer; yet still nothing works.

This strongly implies that the IP address they are trying to use is bogus.
A port forwarding problem would not manifest itself as a NETWORK unreachable.

This message means that an IP router somewhere is throwing up it’s hands and saying «I have no idea where to send this»

This strongly implies that the IP address they are trying to use is bogus.
A port forwarding problem would not manifest itself as a NETWORK unreachable.

This message means that an IP router somewhere is throwing up it’s hands and saying «I have no idea where to send this»

The odd thing is that they have been using the same IP all the time, and only now am I getting this error. I got the IP to use off of IPChicken, and it is the same as always.

that error means the device where your packets are arriving is NOT LISTENING.

So.. either your server is not running, or you are using the wrong IP address to connect with, or your port forwarding is pointed at the wrong IP address.

This is not usually a firewall issue, as they usually just silently eat packets.

that error means the device where your packets are arriving is NOT LISTENING.

So.. either your server is not running, or you are using the wrong IP address to connect with, or your port forwarding is pointed at the wrong IP address.

This is not usually a firewall issue, as they usually just silently eat packets.

My server is running, I use the right IP, and I’m pretty sure my port forwarding is pointed at the correct IP address. Whenever I go on Verizon and port forward, it seems to work; yet when I go on canyouseeme.org and test port 25565, it also says connection refused. Man, is this annoying.

EDIT: Other computers in my LAN can connect to my server, but still not outside of my LAN.

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Ошибка java.net.SocketException: Conection reset — как исправить

Сразу сообщу, что если у вас проблема с игрой майнкрафт, то листайте в самый конец статьи, а пока информация для разработчиков и программистов.

В этом примере мы поговорим о java.net.SocketException. Это подкласс IOException, поэтому это проверенное исключение, которое сигнализирует о проблеме при попытке открыть или получить доступ к сокету.

Настоятельно рекомендуется использовать самый «определенный» класс исключений сокетов, который более точно определяет проблему. Стоит также отметить, что SocketException, выдаётся на экран с сообщением об ошибке, которое очень информативно описывает ситуацию, вызвавшую исключение.

Простое клиент-серверное приложение

Чтобы продемонстрировать это исключение, я собираюсь позаимствовать некоторый код из клиент-серверного приложения, которое есть в java.net.ConnectException. Он состоит из 2 потоков.

Получается, что 2 потока будут в разных классах, запущенных двумя разными основными методами, чтобы вызвать исключение:

Как вы можете видеть, я поместил в SimpleClient 15-секундную задержку, прежде чем попытаться отправить свое сообщение. К тому моменту, когда клиент вызывает sleep(), он уже создал соединение с сервером. Я собираюсь запустить оба потока, и после того, как клиент установит соединение, я внезапно остановлю клиентское приложение.
Вот что происходит на стороне сервера:

Мы получаем исключение SocketException с сообщением «Сброс подключения». Это происходит, когда один из участников принудительно закрывает соединение без использования close().

Конечно, вы можете сделать оперативное закрытие соединения, не закрывая приложение вручную. В коде клиента, после ожидания в течение 15 секунд (или меньше), вы можете выдать новое исключение (используя throws new Exception ()), но вы должны удалить finally, иначе соединение будет нормально закрываться, и SocketException не будет сброшен.

Как решить проблему с SocketException

SocketException — это общее исключение, обозначающее проблему при попытке доступа или открытия Socket. Решение этой проблемы должно быть сделано с особой тщательностью. Вы должны всегда регистрировать сообщение об ошибке, которое сопровождает исключение.

В предыдущем примере мы видели код сообщения. Это происходит, когда один из участников принудительно закрывает соединение без использования close(). Это означает, что вы должны проверить, был ли один из участников неожиданно прерван.

Также может быть сообщение «Слишком много открытых файлов», особенно если вы работаете в Linux. Это сообщение обозначает, что многие файловые дескрипторы открыты для системы. Вы можете избежать этой ошибки, если перейдете в /etc/sysctl.conf и увеличите число в поле fs.file-max. Или попытаться выделить больше стековой памяти.

Конечно, можно встретить много других сообщений. Например, «Ошибка привязки», где ваше соединение не может быть установлено, поскольку порт не может быть привязан к сокету. В этом случае проверьте, используется ли порт и т. д.

Если у вас проблема с minecraft, то чтобы решить проблему попробуйте сделать следующее:

Средняя оценка / 5. Количество голосов:

Или поделись статьей

Видим, что вы не нашли ответ на свой вопрос.

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Unable to connect to friend’s LAN server [duplicate]

I am unable to connect to my friend’s LAN server, on the Technic launcher mod pack, «Vivacity».

When he puts it up, I can’t even see it in my server menu. This has also been an issue when trying to use LAN servers for other games, such as Garry’s Mod. When I enter the port number and try to direct connect, it says «java.net.SocketException:Network is unreachable:no further information».

I tried using our public IP as the port, in an attempt to add it to my server list, but it says «java.net.SocketException: Connection refused: no further information»

What am I doing wrong?

2 Answers 2

Point 1 and 2 are the most important. Also, as a side note, don’t use an IP as a port. They are completely different.

I had this error before when trying to play with my friend. Try this method:

Assuming that you have a computer running Windows:

1: Press Windows Key + R to open the run dialogue

2: Type in «cmd» to open up the command prompt

3: In the cmd, type «ipconfig»

4: This should bring up a list of addresses. The address you want is the IPv4 address

5: Lastly, open up Minecraft and try connecting using your IPv4 address

If you are running on a Mac:

1: Click on the Apple Logo at the top left corner

2: Go to System Preferences

3: Under System Preferences, click on Network

4: At the right, it should say the status, and under that, an address in the format of 192.168.X.XXX

5: Open up Minecraft and try connecting using that address

Sorry for the information overhaul, but this did work for me.

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Minecraft Forums

Internal exception java.net.SocketException: connection reset

warning: this may cause happiness.

i think it may be because 1.3 is comeing out soon and it may be being launched right now

same here man i was playing i on my m8 server i we then got kicked and now we cant play

There is another forum post talking about this problem as well. About 10 other people are having the same issue. Here’s the link http://www.minecraftforum.net/topic/1326620-cant-connect-to-multiplayer/

Guys, Delete your jinput file in your minecraft Bin then force update, then it should work

Thats how i got mine to work again!

Delete the jinput Java file!

Force update your minecraft!

WALLA it should work.

1.3.1 is now out and when i was playing in 1.2.5 the servers worked. Next thing i know when i log on it says a new update is avalable do you want to update. I say yes and it loads compleatly normally but when i try and get on servers it comes up with this error.

If anybody knows how to undo the update or how to fiz the problem that would be great.

did you do the update like i did. i have the same error come up when i try and get on servers but it happens right when i click join server

plz help i have tryed everything

1.3.1 is now out and when i was playing in 1.2.5 the servers worked. Next thing i know when i log on it says a new update is avalable do you want to update. I say yes and it loads compleatly normally but when i try and get on servers it comes up with this error.

If anybody knows how to undo the update or how to fiz the problem that would be great.

I am having the same exact problem. They worked in 1.2.5, but I just downloaded 1.3.1 this morning, and now I can’t log on to my favorite server! It IS updated, and every time I try to go on to it it says:
INTERNAL EXCEPTION JAVA.NET.SOCKET EXCEPTION: CONNECTION RESET

This was my favorite server and I REALLY want to play it again. I can see that other people are on, too. Will it just work out over time? Or do we have to do something?

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java.net.SocketException: Network is unreachable: connect

I am trying to download a xml text file from a web server using this method:

Sometimes this exception is thrown (where I specified is code):

6 Answers 6

You are facing a connection breakdown. Does this happen in 3G, WiFi or «plain» connection on a computer?

Anyway, you must assume that the connection may be lost from time to time, when writing your app. For example, with mobiles, this happens frequently in the tube, in basements, etc. With PC apps, this is less frequent but occurs sometimes.

A retry can be a good solution. And a clean error message that explains the network is not available at this moment too.

«Network is unreachable» means just that. You’re not connected to a network. It’s something outside of your program. Could be a bad OS setting, NIC, router, etc.

I haven’t tested with your code so it would be totally different case though, still I’d like to share my experience. (Also this must be too late answer though, I hope this answer still would help somebody in the future)

I recently faced similar experience like you such as some times Network is unreachable, but sometimes not. In short words, what was cause is too small time out. It seems Java throws IOException with stating «Network is unreachable» when the connection fails because of it. It was so misleading (I would expect something like saying «time out») and I spent almost a month to detect it.

Here I found another post about how to set time out. Alternative to java.net.URL for custom timeout setting

Again, this might not the same case as you got experienced, but somebody for the future.

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