Cannot set endpoint to localhost on windows

[Alessandro Rinaldi]

Hello,
I have the exact same problem and it's preventing me from using
engarde[0] with the official Wireguard client on Windows. I reported
that to the mailing list some time ago.
Thanks for pointing that out again :)

[0] https://github.com/porech/engarde

On Sat, Aug 29, 2020 at 11:08 PM Hirbod Behnam
<chrome.hiri.angry at gmail.com> wrote:
>
> Hello
> I'm not sure if this is already reported or not but I found a small
> problem with the windows client of wireguard that does not allow users
> to use "plugins" on top of wireguard.
> So here is my case. I used gost to create a really simple port
> forwarder from my localhost to my server with this command: gost
> -L=udp://127.0.0.1:12345/1.1.1.1:12345 (that forwards packets on port
> 12345 to 1.1.1.1:12345 and of course my server is not 1.1.1.1 :D)
> Also here is my wireguard config:
>
> [Interface]
> PrivateKey = xxxx
> Address = 10.9.0.2/24
> DNS = 8.8.8.8
> [Peer]
> PublicKey = xxxx
> AllowedIPs = 0.0.0.0/8,1.0.0.0/16,1.1.0.0/24,1.1.1.0/32,1.1.1.2/31,1.1.1.4/30,1.1.1.8/29,1.1.1.16/28,1.1.1.32/27,1.1.1.64/26,1.1.1.128/25,1.1.2.0/23,1.1.4.0/22,1.1.8.0/21,1.1.16.0/20,1.1.32.0/19,1.1.64.0/18,1.1.128.0/17,1.2.0.0/15,1.4.0.0/14,1.8.0.0/13,1.16.0.0/12,1.32.0.0/11,1.64.0.0/10,1.128.0.0/9,2.0.0.0/7,4.0.0.0/6,8.0.0.0/5,16.0.0.0/4,32.0.0.0/3,64.0.0.0/2,128.0.0.0/1
> Endpoint = 127.0.0.1:12345
> PersistentKeepalive = 25
>
> The allowed IPs are all ip addresses except 1.1.1.1.
> When I run the client, the log fills with: [TUN] [xxx-wg0] peer(xxx) -
> Failed to send data packet write udp4 0.0.0.0:58932->127.0.0.1:12345:
> wsasendto: The requested address is not valid in its context.
> And I cannot connect to anything. Sometimes in gost, it says that a
> connection is established but I still cannot connect to anything
> though wireguard.
>
> Also it's good to know that the exact config works fine with TunSafe,
> the official Ubuntu client and openvpn. (I can connect through gost)
> Thanks for the project!
> Hirbod