Add disabled-by-default insecure-tcp feature to tokio-xmpp for use by component connections

tokio-xmpp/src/tcp/mod.rs

@@ -0,0 +1,49 @@
+//! `starttls::ServerConfig` provides a `ServerConnector` for starttls connections
+
+use std::sync::Arc;
+
+use tokio::net::TcpStream;
+
+use crate::{
+    connect::{ServerConnector, ServerConnectorError},
+    xmpp_stream::XMPPStream,
+    Component,
+};
+
+use self::error::Error;
+
+mod component;
+pub mod error;
+
+/// Component that connects over TCP
+pub type TcpComponent = Component<TcpServerConnector>;
+
+/// Connect via insecure plaintext TCP to an XMPP server
+/// This should only be used over localhost or otherwise when you know what you are doing
+/// Probably mostly useful for Components
+#[derive(Debug, Clone)]
+pub struct TcpServerConnector(Arc<String>);
+
+impl TcpServerConnector {
+    /// Create a new connector with the given address
+    pub fn new(addr: String) -> Self {
+        Self(addr.into())
+    }
+}
+
+impl ServerConnectorError for Error {}
+
+impl ServerConnector for TcpServerConnector {
+    type Stream = TcpStream;
+    type Error = Error;
+    async fn connect(
+        &self,
+        jid: &xmpp_parsers::Jid,
+        ns: &str,
+    ) -> Result<XMPPStream<Self::Stream>, Self::Error> {
+        let stream = TcpStream::connect(&*self.0)
+            .await
+            .map_err(|e| crate::Error::Io(e))?;
+        Ok(XMPPStream::start(stream, jid.clone(), ns.to_owned()).await?)
+    }
+}