proxy: set proper user agent

instead of hard-coding "something/1.0.0".

Signed-off-by: Fabian Grünbichler <f.gruenbichler@proxmox.com>

src/proxy.rs

@@ -131,7 +131,7 @@ impl Proxy {
         })
     }
 
-    pub(crate) fn connect<S: AsRef<str>>(&self, host: S, port: u16) -> String {
+    pub(crate) fn connect<S: AsRef<str>>(&self, host: S, port: u16, user_agent: &str) -> String {
         let authorization = if self.use_authorization() {
             let creds = BASE64_STANDARD.encode(format!(
                 "{}:{}",
@@ -150,7 +150,7 @@ impl Proxy {
         format!(
             "CONNECT {}:{} HTTP/1.1\r\n\
 Host: {}:{}\r\n\
-User-Agent: something/1.0.0\r\n\
+User-Agent: {}\r\n\
 Proxy-Connection: Keep-Alive\r\n\
 {}\
 \r\n",
@@ -158,6 +158,7 @@ Proxy-Connection: Keep-Alive\r\n\
             port,
             host.as_ref(),
             port,
+            user_agent,
             authorization
         )
     }

src/stream.rs

@@ -425,7 +425,12 @@ pub(crate) fn connect_host(
 
     if proto == Some(Proto::HTTPConnect) {
         if let Some(ref proxy) = proxy {
-            write!(stream, "{}", proxy.connect(hostname, port)).unwrap();
+            write!(
+                stream,
+                "{}",
+                proxy.connect(hostname, port, &unit.agent.config.user_agent)
+            )
+            .unwrap();
             stream.flush()?;
 
             let mut proxy_response = Vec::new();