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Implement first, unfinished version of DNS support and fix incomplete TCP stream bug

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This commit does two things:
First, it implements a first, unfinished version of the virtual DNS
functionality. This feature is incomplete and has known bugs. Since it
needs to be enabled manually, this is not a huge issue so far.
Second, the commit fixes a bug where TCP streams where not properly
relayed, causing TCP connections to stall.
This commit is contained in:
B. Blechschmidt 2023-03-23 13:03:01 +01:00
parent 56d0dd9d42
commit c9297124e1
5 changed files with 375 additions and 54 deletions
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9
tests/proxy.rs
View file

@ -13,6 +13,7 @@ mod tests {
use nix::unistd::Pid;
use serial_test::serial;
use tun2proxy::tun2proxy::Options;
use tun2proxy::{main_entry, Proxy, ProxyType};
static TUN_TEST_DEVICE: &str = "tun0";
@ -92,7 +93,7 @@ mod tests {
}
default_route_args.push(String::from(route_component));
}
if default_route_args.len() > 0 {
if !default_route_args.is_empty() {
break;
}
}
@ -137,9 +138,9 @@ mod tests {
}
Ok(Fork::Child) => {
prctl::set_death_signal(signal::SIGKILL as isize).unwrap(); // 9 == SIGKILL
main_entry(TUN_TEST_DEVICE, test.proxy);
main_entry(TUN_TEST_DEVICE, test.proxy, Options::new());
}
Err(_) => assert!(false),
Err(_) => panic!(),
}
}
Err(_) => {
@ -150,7 +151,7 @@ mod tests {
}
fn require_var(var: &str) {
env::var(var).expect(format!("{var} environment variable required").as_str());
env::var(var).unwrap_or_else(|_| panic!("{}", "{var} environment variable required"));
}
#[serial]