Client SSL and SOCKS profiles on same VS

Hello Devcentral,

I have a VS that's configured as follows

ltm virtual myVS {
    destination 10.0.0.1:443
    ip-protocol tcp
    mask 255.255.255.255
    profiles {
        clientssl {
            context clientside
        }
        socks { }
        tcp { }
    }
    source 0.0.0.0/0
    source-address-translation {
        type automap
    }
    vs-index 69
}

The client uses stunnel to establish a TLS session with 10.0.0.1 and then basically sends SOCKS requests into the tunnel. This is accomplished by configuring 127.0.0.1:8080 as SOCKS proxy in the browser settings.

Stunnel Configuration:

[sockstest]
client = yes
accept = 127.0.0.1:8080
connect = 10.0.0.1:443
verify = 0

This configuration doesn't work: the browser fails to load any websites.

But if i just remove the Client SSL profile from myVS and use 10.0.0.1:443 as SOCKS proxy, the browser successfully loads any web pages.

Why is that ?