stun | 易学教程

WebRTC uses always TURN outside our LAN

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问题 My problem: I wrote a video chat application based on WebRTC. When two clients connect inside our LAN, they always get a Peer-to-Peer connection. But when a client from our LAN connects with a client outside our LAN it's always a Peer-to-TURN connection. When mobile devices connect with each other it's often TURN-to-TURN. What I expect: I know of symmetric NAT problems and expect 20% to 30% of all connections to require a TURN connection. But so far I never found any two clients outside of

A STUN and TURN server that work under 3G/4G Network

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问题 It is very interesting that I can actually make a mVoIP service from the scratch. I finally could make a call using OpenSIPs source through SIP protocol. I used external STUN server that helps me to find users' private IP address behind NAT firewalls. However, the free external STUN server cannot find user's IP address to make a call when a smartphone is on 3G or 4G network. As a programmer, I won't give up to make a mVoIP service. However, I need a help at this time from you guys. Is there a

Hole punching using STUN

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问题 I'm currently trying to send UDP messages over the internet and have to set up the firewalls for both endpoints A and B (which are both behind a NAT). To do this, I want to use hole punching using a STUN server. When A creates a request to the STUN server (say, private: 85.1.1.12:6000 and public: 173.194.78.127:19302) I get 85.1.1.12:6000 as a response. If I were to send a packet from the same origin configuration (same origin ip and port that were used for the STUN-request) to any other

A STUN and TURN server that work under 3G/4G Network

阅读更多关于 A STUN and TURN server that work under 3G/4G Network

It is very interesting that I can actually make a mVoIP service from the scratch. I finally could make a call using OpenSIPs source through SIP protocol. I used external STUN server that helps me to find users' private IP address behind NAT firewalls. However, the free external STUN server cannot find user's IP address to make a call when a smartphone is on 3G or 4G network. As a programmer, I won't give up to make a mVoIP service. However, I need a help at this time from you guys. Is there a good way to solve this problem? Thank you. There can be two problems here: -you can't find the correct

Installing CoTurn 4.5.0.6 on Ubuntu 16.04.3 x64 TLS not working

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问题 I am trying to install CoTurn 4.5.0.6 on a Digital Ocean Ubuntu 16.04.3 LTS. I can't use sudo apt-get install coturn since it installs version 4.5.0.3. Also I can't install Ubuntu 17.10 since I need long term support (TLS). I create a droplet on Digital Ocean with Ubuntu 16.04.3 LTS. Then I downloaded CoTurn: wget https://github.com/coturn/coturn/archive/4.5.0.6.tar.gz I unpack it: tar xvfz 4.5.0.6.tar.gz Go inside the folder: cd coturn-4.5.0.6 Install Libraries & Utilities needed: sudo apt

Compiling libnice for Android

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问题 I'm trying to compile libnice (v0.18 to be specific) for Android, but have run into some troubles. How can I compile libnice for Android? I have listed my attempts so far below. 1st Attempt My first try was using a custom Android.mk makefile but I got an error stating AI_NUMERICHOST undeclared (adding #include <netdb.h> did not resolve this and I'm out of ideas here). See my Android.mk below LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := glib LOCAL_SRC_FILES := lib/libglib

UDP/TCP hole punching vs UPnP vs STUN vs?

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问题 I try to make a P2P Program and need help with getting through the NAT of the clients. I have read many questions here on stackoverflow, but i never got what the drawbacks and benefits of all the Methods to get through a NAT are. How many routers support which methods? Which methods are commonly used by the big companies? (BitTorrent, TeamViewer,...) What are the drawbacks/benefits of the three methods i listed and which else exists? 回答1: UPnP requires software support in your router. Even

Hole punching using STUN

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I'm currently trying to send UDP messages over the internet and have to set up the firewalls for both endpoints A and B (which are both behind a NAT). To do this, I want to use hole punching using a STUN server. When A creates a request to the STUN server (say, private: 85.1.1.12:6000 and public: 173.194.78.127:19302) I get 85.1.1.12:6000 as a response. If I were to send a packet from the same origin configuration (same origin ip and port that were used for the STUN-request) to any other destination address (the destination port stays the same) then my NAT would change the public port again

Installing CoTurn 4.5.0.6 on Ubuntu 16.04.3 x64 TLS not working

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I am trying to install CoTurn 4.5.0.6 on a Digital Ocean Ubuntu 16.04.3 LTS. I can't use sudo apt-get install coturn since it installs version 4.5.0.3. Also I can't install Ubuntu 17.10 since I need long term support (TLS). I create a droplet on Digital Ocean with Ubuntu 16.04.3 LTS. Then I downloaded CoTurn: wget https://github.com/coturn/coturn/archive/4.5.0.6.tar.gz I unpack it: tar xvfz 4.5.0.6.tar.gz Go inside the folder: cd coturn-4.5.0.6 Install Libraries & Utilities needed: sudo apt-get install libssl-dev sudo apt-get install sqlite3 sudo apt-get install libsqlite3-dev sudo apt-get

Compiling libnice for Android

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I'm trying to compile libnice (v0.18 to be specific) for Android, but have run into some troubles. How can I compile libnice for Android? I have listed my attempts so far below. 1st Attempt My first try was using a custom Android.mk makefile but I got an error stating AI_NUMERICHOST undeclared (adding #include <netdb.h> did not resolve this and I'm out of ideas here). See my Android.mk below LOCAL_PATH := $(call my-dir) include $(CLEAR_VARS) LOCAL_MODULE := glib LOCAL_SRC_FILES := lib/libglib-2.0.a include $(PREBUILT_STATIC_LIBRARY) include $(CLEAR_VARS) LOCAL_MODULE := gobject LOCAL_SRC_FILES