Write a CHANNEL_EOF message over SSH when closing SSH.

src/dorkbox/executor/SshProcess.kt

@@ -1,6 +1,6 @@
 /*
- * Copyright 2020 dorkbox, llc
-
+ * Copyright 2021 dorkbox, llc
+ *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
@@ -13,10 +13,11 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package dorkbox.executor
 
 import net.schmizz.sshj.SSHClient
+import net.schmizz.sshj.common.Message
+import net.schmizz.sshj.common.SSHPacket
 import net.schmizz.sshj.connection.channel.direct.Session
 import java.io.IOException
 import java.io.InputStream
@@ -62,6 +63,13 @@ class SshProcess(private val ssh: SSHClient,
     }
 
     override fun destroy() {
+        try {
+            // https://github.com/hierynomus/sshj/issues/143
+            // send EOF when the channel is closed.
+            ssh.transport.write(SSHPacket(Message.CHANNEL_EOF).putUInt32(session.recipient.toLong()));
+        } catch (ignored: IOException) {
+        }
+
         try {
             session.close()
         } catch (ignored: IOException) {