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Questions tagged [loopback-address]

Loopback address is a special IP number (127.0.0.1) that is designated for the software loopback interface of a machine.

Loopback address, based upon RFC 5735: Special Use IPv4 Addresses, is a special IP number (eg: 127.0.0.1) that is designated for the software loopback interface of a machine. The loopback interface has no hardware associated with it, and it is not physically connected to a network.

Within IPV6 loopback looks like 0:0:0:0:0:0:0:1, although in IPV6, the longest contiguous block of zeros may be replaced with :: thus resulting in the condensed loopback address of ::1, based upon RFC 4291: IP Version 6 Addressing Architecture.

Looback address is a special range of addresses in the range 127.0.0.0 to 127.255.255.255. The data sent by a host to a 127.x.x.x loopback address are not passed down to the data link layer for transmission. Instead, they “loop back” to the source device.

The purpose of the loopback range is testing of the TCP/IP protocol implementation on a host. Since the lower layers are short-circuited, sending to a loopback address allows the higher layers (IP and above) to be effectively tested without the chance of problems at the lower layers manifesting themselves. 127.0.0.1 is the address most commonly used for testing purposes.

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How to connect to my http://localhost web server from Android Emulator

What can I do in the Android emulator to connect it to my localhost web server page at http://localhost or http://127.0.0.1? I've tried it, but the emulator still takes my request like a Google search for localhost or worse it says that it didn't…
Fopa Léon Constantin
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'localhost' connection without firewall popup

Consider the following R script: con <- socketConnection(host = "localhost", port = 8, server = TRUE, blocking = TRUE, open = "a+b") close(con = con) Saving these lines as a .R file, and subsequently running it from command line produces (on…
Vandenman
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Loopback in Route table

I and working on a project to create a WAN emulator using FreeBDS in a VMWare guest configured to route traffic between the host operating system and its normal gateway router. I plan to modify the route table on the host so that it's traffic is…
Gil
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Is there a way to replace 127.0.0.1 on my local machine for test purposes?

I know it may sound stupid but anyway. Maybe there is a trick? I just want that the local web server receives requests from my local machine but somehow sees a different IP address? Even one single that is different from the infamous 127.0.0.1 would…
User
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Why does the ip address 127.001 route to 127.0.0.1 and 127.011 route to 127.0.0.9?

Through an accidental typo I've realized that when you try to reach the ip address 127.0.01 it will successfully route to 127.0.0.1. Playing around with this, I've noticed that there seems to be some kind of translation happening. Some…
Sodman
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Using the '.localhost' TLD searches in browsers instead of showing the site associated with the address

According to RFC 2606 (1999) the TLD .localhost is reserved for use for testing locally. The goal is to configure a preview site to run locally using the TLD .localhost, e.g. http://example.localhost The problem is that when I use Chrome or Safari…
dotZak
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Using loopback interface for communicating between production application

I am developing 2 applications on a Ubuntu server which needs to communicate with each other over UDP at about peak 200 Mbps. In the initial stage I am planning to deploy both applications on the same server communicating over the…
Indika K
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Client cannot access server which bind loopback address in C#

Now a socket in server side binds 192.168.1.69:9000，and then start to listen. Client connects the server using 127.0.0.1:9000. But fail. However,it works when client connect the server using 192.168.1.69:9000. Client and server are both running on…
xiaox2y2
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Xamarin.Forms Android : access localhost (10.0.2.2) from WebView

I have a Xamarin.Forms mobile app, this one contains a WebView. This WebView URL should be my local development machine because I have a web app running there. So, when running the Android Emulator, I try to use the loopback address,…
ClubberLang
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Two relations from same model loopback not working

I have two models users and appointments. The users model is like below- { "users": { "0": { "id": "1", "name": "test1", "role": "doctor" }, "1": { "id": "2", "name": "test2", …
BeingExpert
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how to handle>>{object promise} error while am trying to create slc loopback:relation

Am new bee to loopback. i have generated loopback API model using loopback arc generator. But it generated models and API's without table relationship(such as key constraints). Is there any other method to generator for generating API model with…
Varathan Swaminath
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Loopback adapter still listen on 10.10.10.10 after uninstall

I've installed on a Windows 2008 Server a loopback adapter with static IP 10.10.10.10 and subnet mask 255.255.255.0. Having no more use for the interface I disabled and uninstalled it, but I can still ping the IP 10.10.10.10 from inside the…
Vincenzo Maggio
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where does the loopback stack reside?

Question is straight forward enough: where does the loopback stack reside in linux, and to a lesser necessity, windows? In linux it appears to be a kernel driver, but I don't know where to look to find it in the kernel memory or source. It seems to…
NationWidePants
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missing 127.0.0.1 (loopback address)

Ubuntu linux, 14.04 (DigitalOcean) $ ifconfig -a eth0 Link encap:Ethernet HWaddr 04:01:1f:4c:XX:XX inet addr:128.199.XXX.XXX Bcast:128.199.XXX.255 Mask:255.255.192.0 inet6 addr: fe80::601:1fff:XXXX:XXX/64 Scope:Link …
ytyng
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Can't Send data to loopback address from loopback address

Is it possible to send data from 127.0.0.1:7000 to 127.0.0.1:8000 ? I am getting socket error 10049 which is invalid address. sockaddr_in sin; memset((char*)&sin, 0, sizeof(sin)); sin.sin_family = AF_INET; sin.sin_addr = 16777343;…
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