diff --git a/lib/socket.js b/lib/socket.js
index 9f8ac53..fbffef8 100644
--- a/lib/socket.js
+++ b/lib/socket.js
@@ -136,6 +136,26 @@ module.exports = class Socket extends Duplex {
     return true
   }
 
+  /**
+   * Handle incoming data from another source.
+   * Dangerous and undocumented method.
+   * @public
+   * @param {Buffer} data
+   */
+  process(data) {
+    if (this[pReadableClosed]) {
+      return false
+    }
+
+    if (this[pReadable] && this[pReadQueue].isEmpty()) {
+      this[pReadable] = this.push(data)
+    } else {
+      this[pReadQueue].push(data)
+    }
+
+    return true
+  }
+
   close() {
     if (!this[pSocketClosed] && this[pCloseTransport]) {
       this[pSocket].close()
@@ -167,20 +187,12 @@ function denque(...args) {
  * @param {object} rinfo
  */
 function handleMessage(message, rinfo) {
-  if (this[pReadableClosed]) {
-    return
-  }
-
   // Drop messages from unknown sender.
   if (rinfo.address !== this[pRemoteAddress] || rinfo.port !== this[pRemotePort]) {
     return
   }
 
-  if (this[pReadable] && this[pReadQueue].isEmpty()) {
-    this[pReadable] = this.push(message)
-  } else {
-    this[pReadQueue].push(message)
-  }
+  return this.process(message)
 }
 
 /**