IPの代わりにマシン名を介してローカルコンピュータに到達する方法は？ -- wi-fi フィールド と networking フィールド と dns フィールド android 関連 問題

Developer here prototyping a mobile app, somewhat new to mobile:

• I have a simple HTTP service running (currently) on my main laptop with machine name latitude.
• Another laptop named vaio sharing the same WiFi network can access that service via http://latitude:8080 -- in other words, it can easily resolve the (current) IP 192.168.x.y (or whatever dynamic IP it has at that moment) of latitude somehow.
• Now my HTC Android phones, connected to the same WiFi network, can reach the IP address of latitude so opening in its browser http://192.168.x.y:8080 works.
• But I'd like to use the machine name here, too, like when I access the HTTP service from vaio, simply by typing http://latitude:8080 and have the phone resolve the current dynamic IP of latitude. This doesn't work, only get the standard browser error page: "Webpage not available".

Is there some DNS setting in Android I need to tweak? Haven't found anything from playing around with Settings, and a question like this is notoriously hard to google, too...

The One V has Android 4.0, and the One M7 has Android 4.2 in case that makes a difference.

(Note, this should work even when the Android is not USB-connected to my computers and is not acting as a WiFi Hotspot -- obviously, since it's consuming my main WiFi network anyway).

Regardless whether you're connected to your local network via WiFi and DHCP is in use, Android always seems to override its DNS entries using Google's servers. It's somewhat hidden, but easy to change xe2x80x93 provided you have your own DNS running (a lot of routers offer that already).

To do so, go to your list of WiFi networks in Settings, long-press your WiFi's entry, select to edit it. Activate Advanced Settings. Now you can edit the DNS entries. Simply replace the first entry with your own DNS server's IP, and leave the second entry (DNS 2) untouched for fall-back.

Now, if your own DNS can resolve your local network's machines, you should be able to use their hostnames to reach out to them. No root and no editing the hosts file necessary (thought that might be an alternative, if you've got no own DNS service running). Works excellent here with me and my network ;)

When I want a machine name instead of an IP I edit the HOSTS file. Try adding the devices and their IP addresses there. A google search for the hosts file for your operating system should be easy.

Add two lines at the end of your device's hosts file (/etc/hosts) file with ES Explorer (needs a rooted device).

Template:

your_host_machine's_IP_address  domain_name    

Example of domain_name can be localhost.

Example:

::1  domain_name  

It works fine when typing localhost in URL bar instead of IP address.

In my case, on Windows 10, temporarily turning off windows firewall made surfing to http://latitude:8080 possible.

For the longer term I created a rule to let these sort of connections through the firewall ...

• {Windows} > Start > "Firewall" > Windows Defender Firewall with Advance Security. Inbound Rules > New Rule ...

  • General
    • Name: TCP web connections from LAN
    • Allow the connection if it is secure ...
    • Choose: "Allow the connection if it is authenticated and integrity-protected"
  • Protocols And Ports
    • Protocol Type: TCP
    • Local Port: 80, 880
  • Advanced
    • Specify profiles to whcih this rule applies: Private

• {Android}. Test with Firefox or Chrome, not Dolphin