zlib required for displaying dependency licenses so removing the option.

Author: leakingmemory

Cargo.toml

@@ -8,10 +8,9 @@ name = "vtunngd"
 path = "src/main.rs"
 
 [features]
-default = ["lzo", "zlib"]
+default = ["lzo"]
 
 lzo=["dep:rust-lzo"]
-zlib=[]
 
 [dependencies]
 libc = "0.2"

src/main/lfd_zlib.rs

@@ -18,20 +18,17 @@
  */
 
 /* ZLIB compression module */
-#[cfg(feature = "zlib")]
 use std::io::Write;
 use crate::{lfd_mod, vtun_host};
 use crate::linkfd::{LfdMod, LfdModFactory};
 use crate::mainvtun::VtunContext;
 use crate::syslog::SyslogObject;
 
-#[cfg(feature = "zlib")]
 struct LfdZlib {
     pub encoder: flate2::write::ZlibEncoder<Vec<u8>>,
     pub decoder: flate2::write::ZlibDecoder<Vec<u8>>
 }
 
-#[cfg(feature = "zlib")]
 impl LfdZlib {
     pub fn new(ctx: &VtunContext, host: &vtun_host::VtunHost) -> LfdZlib {
         ctx.syslog(lfd_mod::LOG_INFO, "ZLIB compression initialized");
@@ -51,22 +48,12 @@ impl LfdZlibFactory {
         }
     }
 }
-#[cfg(feature = "zlib")]
 impl LfdModFactory for LfdZlibFactory {
     fn create(&self, ctx: &VtunContext, host: &mut vtun_host::VtunHost) -> Result<Box<dyn LfdMod>,i32> {
         Ok(Box::new(LfdZlib::new(ctx, host)))
     }
 }
 
-#[cfg(not(feature = "zlib"))]
-impl LfdModFactory for LfdZlibFactory {
-    fn create(&self, ctx: &VtunContext, _host: &mut vtun_host::VtunHost) -> Result<Box<dyn LfdMod>,i32> {
-        ctx.syslog(lfd_mod::LOG_ERR, "ZLIB compression is not supported, rebuild with zlib enabled");
-        Err(2)
-    }
-}
-
-#[cfg(feature = "zlib")]
 impl LfdMod for LfdZlib {
     fn encode(&mut self, ctx: &VtunContext, buf: &mut Vec<u8>) -> Result<(),()> {
         match self.encoder.write_all(buf) {