davlxd / simple-vpn-demo Goto Github PK

What protocol does this server use? This server is not support multiple connections. Are there any ready server software that can provide this?

运行程序后只看到Writing to tun 没有看到Writing to UDP 导致连接VPN无法上网

Terminal log:

write tun_fd error: Invalid argument
Execute iptables -t nat -D POSTROUTING -s 10.8.0.0/16 ! -d 10.8.0.0/16 -m comment --comment 'vpndemo' -j MASQUERADE
Execute iptables -D FORWARD -s 10.8.0.0/16 -m state --state RELATED,ESTABLISHED -j ACCEPT
Execute iptables -D FORWARD -d 10.8.0.0/16 -j ACCEPT

As is

我把这个demo deploy到本地的一个linux机器一切正常，然后我尝试把这个跑在阿里云，udp打开相关端口，但是手机端连上去以后，server 输出只有：

Writing to tun 59 bytes ...
Writing to tun 60 bytes ...
Writing to tun 81 bytes ...
Writing to tun 57 bytes ...
Writing to tun 58 bytes ...
Writing to tun 58 bytes ...
Writing to tun 71 bytes ...
Writing to tun 71 bytes ...
Writing to tun 71 bytes ...

似乎tun_fd永远没被set，请问有什么debug的想法吗

hello, i want to run this on tcp instead of udp.

I understand that it is slower but nonetheless i want to do it

i replaced all udp and UDP text in the vpn.c file with tcp or TCP but now on run i get this:

gcc -o vpn vpn.c -g -Wall
vpn.c: In function ‘tcp_bind’:
vpn.c:142:23: error: ‘IPPROTO_tcp’ undeclared (first use in this function)
hints.ai_protocol = IPPROTO_tcp;
^
vpn.c:142:23: note: each undeclared identifier is reported only once for each function it appears in
Makefile:2: recipe for target 'vpn' failed
make: *** [vpn] Error 1

方便留一下您的邮箱或者其他联系方式吗？

RT.Thx.

I'm having connection problem.
I set it up on DigitalOcean. But I never got a VPN connection.
What should I be server ip ? digitalocean server ip ?

您好，我这边创建多个tun通道，但是发现只有第一个tun通道有数据可读，是因为iptable配置的问题吗

I am getting the following error when running on linux.
"ioctl[TUNSETIFF]: Operation not permitted"

can't visit webside as google
i make it . server and client in two linux host;
it can send udp package.
but client can't visit google webside by server

I am trying to compile it on macOS Sierra and getting the following error.

gcc -o vpn vpn.c -g -Wall
vpn.c:14:10: fatal error: 'linux/if_tun.h' file not found
#include <linux/if_tun.h>
^
1 error generated.
make: *** [vpn] Error 1