Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Is Win7 blocking UDP traffic on 127.0.0.1?

01 Mar 2012   #1
mariovde

Win XP
 
 
Is Win7 blocking UDP traffic on 127.0.0.1?

Hi,

We are building an 2 application that connect to 127.0.0.1:30303.
They are used to send data from app A to app B, acting as a local p2p connection.

On windows XP, everything runs as it should. On windows 7 it doesn't work anymore.
We've tried turning off the firewalls, opening ports etc but we cannot get this connection to work on win7.

Anyone got an idea of what changed in Win7 regarding tcp/udp or socket changes?

Thanks guys!

Mario


My System SpecsSystem Spec
.
01 Mar 2012   #2
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

Quote   Quote: Originally Posted by mariovde View Post
Hi,

We are building an 2 application that connect to 127.0.0.1:30303.
They are used to send data from app A to app B, acting as a local p2p connection.

On windows XP, everything runs as it should. On windows 7 it doesn't work anymore.
We've tried turning off the firewalls, opening ports etc but we cannot get this connection to work on win7.

Anyone got an idea of what changed in Win7 regarding tcp/udp or socket changes?

Thanks guys!

Mario
Welcome to SevenForums,

Maybe try to edit the hosts file in windows 7 with Notepad...

You can find a tip: Here
My System SpecsSystem Spec
01 Mar 2012   #3
mariovde

Win XP
 
 

Thank you for the reply NoN, but we've look in the hosts file already.
it says 127.0.0.1 localhost.
So we think this is okay, because XP has the same hosts-file.
My System SpecsSystem Spec
.

01 Mar 2012   #4
NoN

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]
 
 

Quote   Quote: Originally Posted by mariovde View Post
Thank you for the reply NoN, but we've look in the hosts file already.
it says 127.0.0.1 localhost.
So we think this is okay, because XP has the same hosts-file.
Perhaps some infos that might help:
Hosts File : Use in Windows 7 / Vista[2]=Networking Internet
My System SpecsSystem Spec
02 Mar 2012   #5
mariovde

Win XP
 
 

No, that didn't work either...
My System SpecsSystem Spec
02 Mar 2012   #6
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by mariovde View Post
Hi,

We are building an 2 application that connect to 127.0.0.1:30303.
They are used to send data from app A to app B, acting as a local p2p connection.

On windows XP, everything runs as it should. On windows 7 it doesn't work anymore.
We've tried turning off the firewalls, opening ports etc but we cannot get this connection to work on win7.

Anyone got an idea of what changed in Win7 regarding tcp/udp or socket changes?

Thanks guys!

Mario
Some firewalls can block the ports/prot. even when disabled. You may need to un-install it to find out.
My System SpecsSystem Spec
Reply

 Is Win7 blocking UDP traffic on 127.0.0.1?




Thread Tools





Similar help and support threads
Thread Forum
GPO blocking application traffic w/Firewall service stopped
Hi folks. I wasn't sure which forum this belonged in, so apologies if this is the wrong place. I'm working with a hardened Win7 x32 machine right now that's part of a domain that has a very strict (military) GPO set assigned to it. I have an application that sends unicast traffic on one machine,...
System Security
Blocking p2p traffic on network
Hi Everyone and thank you for taking a look. I work on a road project in a rural area here in SL and we have very limited internet connectivity in my office of just 120gb package per month. but here other employees are using this to download torrents and they have already eaten up 70gb on...
Network & Sharing
Win7 Firewall Service not starting, blocking ALL incoming connections
Hi guys this issue is doing my head in. This happened to me before a few weeks ago, I reinstalled and after about a week the problem is back. The Issue: After a restart of the computer the firewall will NOT turn on, in the control panel it tells me to reset to default settings (1 Button) upon...
Network & Sharing
Microsoft blocking Win7 keys purchased from the MS Store
My desktop surprised me with a "Windows Not Genuine" message, and a black desktop background, this morning. To make a long story short, I'd purchased two Win7 Home Premium Upgrade keys in the summer of 2009, online from the Microsoft Store (in the USA). Microsoft had blocked the keys, and...
Windows Updates & Activation
Blocking outbound traffic (data out)
My ISP charges for outbound traffic, even though they dont pay for it. According to them it is to stop people sharing files and stuff illegally. In my case, it's accounting for 10% of my allowance, and I've tried everything I can to stop it. Somehow, people are getting into my network and...
System Security

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 07:42.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App