how to change port 80 android

Question

I made a webserver on my android device(using Nanohttpd). It's working fine over the port 8080 but I want to make it okay over the port 80,(I want to tape on my browser : http://192.168.x.x instead of http://192.168.x.x:8080/ ) but I'm not able to do it

This is how I call the method that creates the webserver:

httpServer = new NanoHTTPD(80,Environment.getExternalStorageDirectory());

Can someone tell me what service is running by default over the port 80 ?
How can i fix this problem ?

Can you post where you got the library from because the constructor you are using does not seem to be a standard NanoHTTPD constructor. They originally only have `NanoHTTPD(String hostname, int port)` and `NanoHTTPD(int port)` — JRomero, May 28 '13 at 17:22

score 3 · Accepted Answer · edited Dec 04 '14 at 18:54

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I finally found a way to fix that, for those who have the same problem, here is the solution

I rooted the phone using UnlockRoot
then I installed Port redirector from the play store and I forwarded the traffic from port 80 to port 8080, and now my web server is available from the address: 192.168.x.x

Hope it will help :)

edited Dec 04 '14 at 18:54

its_notjack

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answered May 29 '13 at 00:16

AndroidM

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An alternative port redirector on the play store: https://play.google.com/store/apps/details?id=at.bherbst.net&hl=en – its_notjack Oct 27 '15 at 17:37

score 1 · Answer 2 · answered May 28 '13 at 17:23

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Ports below 1024 are restricted on Unix like systems. You need superuser privileges to bind to these "well-known" ports.

List of these "well-known" ports on wikipedia

answered May 28 '13 at 17:23

Rajesh

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if i 'm root, how can i do it – AndroidM May 28 '13 at 18:45
Check this question: http://stackoverflow.com/q/7295873/1321873. After assuming the superuser privileges, you can directly run the webserver on port 80 without the need for port forwarding. – Rajesh May 29 '13 at 05:02
@Rajest - actually, no, that won't directly work (the post you link is rather misleading). One would have to use `su` to start the webserver in its own root process, or perhaps have a shim which opens the listening socket and then passes the scoket through a unix domain socket to a non-root web server to use (not sure if that would work) – Chris Stratton Jun 01 '13 at 02:11

score 0 · Answer 3 · answered May 28 '13 at 17:30

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Check out line 89 of the server source:

https://github.com/NanoHttpd/nanohttpd/blob/master/core/src/main/java/fi/iki/elonen/NanoHTTPD.java

I don't even see a constructor that type-matches your arguments. That might be part of the problem.

answered May 28 '13 at 17:30

JLindsey

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how to change port 80 android

3 Answers3