title: JSch 0.1.53 session.connect() throws "End of IO Stream Read"
body: <p>I downloaded a new <a href="http://www.jcraft.com/jsch/" rel="noreferrer">JSch 0.1.53 library</a> and JSch (sftp) download task no longer works. This release fails on <code>session.connect()</code> function throwing an error <code>Session.connect: java.io.IOException: End of IO Stream Read</code>.</p>
  
  <p>My old jsch.jar(2011-10-06) works fine to the same host, maybe I am missing a new config props?</p>
  
  <pre><code>Session session=null;
  ChannelSftp channel=null;
  try {
      JSch.setLogger(SSHUtil.createJschLogger());
  
      JSch jsch=new JSch();
      session=jsch.getSession("myuser", "11.22.33.44", 22);
      session.setConfig("StrictHostKeyChecking", "no"); 
      session.setPassword("mypwd");
      session.connect(2000); // &lt;-- FAILS HERE
      channel = (ChannelSftp)session.openChannel("sftp");
      channel.connect(2000);
      ...
  </code></pre>
  
  <p>This is an extensive JSch logging indicating whats going on.</p>
  
  
  
  <pre class="lang-none prettyprint-override"><code>INFO : Connecting to 11.22.33.44 port 22
  INFO : Connection established
  INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1
  INFO : Local version string: SSH-2.0-JSCH-0.1.53
  INFO : CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
  INFO : aes256-ctr is not available.
  INFO : aes192-ctr is not available.
  INFO : aes256-cbc is not available.
  INFO : aes192-cbc is not available.
  INFO : CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
  INFO : diffie-hellman-group14-sha1 is not available.
  INFO : ecdh-sha2-nistp256 is not available.
  INFO : ecdh-sha2-nistp384 is not available.
  INFO : ecdh-sha2-nistp521 is not available.
  INFO : CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
  INFO : ecdsa-sha2-nistp256 is not available.
  INFO : ecdsa-sha2-nistp384 is not available.
  INFO : ecdsa-sha2-nistp521 is not available.
  INFO : SSH_MSG_KEXINIT sent
  INFO : SSH_MSG_KEXINIT received
  INFO : kex: server: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  INFO : kex: server: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
  INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  INFO : kex: server: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  INFO : kex: server: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  INFO : kex: server: none,zlib@openssh.com
  INFO : kex: server: none,zlib@openssh.com
  INFO : kex: server:
  INFO : kex: server:
  INFO : kex: client: diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group1-sha1
  INFO : kex: client: ssh-rsa,ssh-dss
  INFO : kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
  INFO : kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
  INFO : kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
  INFO : kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
  INFO : kex: client: none
  INFO : kex: client: none
  INFO : kex: client:
  INFO : kex: client:
  INFO : kex: server-&gt;client aes128-ctr hmac-md5 none
  INFO : kex: client-&gt;server aes128-ctr hmac-md5 none
  INFO : SSH_MSG_KEX_DH_GEX_REQUEST(1024&lt;1024&lt;1024) sent
  INFO : expecting SSH_MSG_KEX_DH_GEX_GROUP
  INFO : Disconnecting from 11.22.33.44 port 22
  Exception in thread "main" com.jcraft.jsch.JSchException: Session.connect: java.io.IOException: End of IO Stream Read
          at com.jcraft.jsch.Session.connect(Session.java:558)
          at com.jcraft.jsch.Session.connect(Session.java:183)
          at my.test.DownloadSFTP.main(DownloadSFTP.java:37)
  Caused by: java.io.IOException: End of IO Stream Read
          at com.jcraft.jsch.IO.getByte(IO.java:84)
          at com.jcraft.jsch.Session.read(Session.java:918)
          at com.jcraft.jsch.Session.connect(Session.java:323)
  </code></pre>
  
  <p>I have also a very old Jsch.jar (2011-10-06) where download task works fine, this is a log. A Reason I wanted to upgrade is this very slow transferring files. New release should do things better I have read.</p>
  
  <pre class="lang-none prettyprint-override"><code>INFO : Connecting to 11.22.33.44 port 22
  INFO : Connection established
  INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1
  INFO : Local version string: SSH-2.0-JSCH-0.1.44
  INFO : CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
  INFO : aes256-ctr is not available.
  INFO : aes192-ctr is not available.
  INFO : aes256-cbc is not available.
  INFO : aes192-cbc is not available.
  INFO : arcfour256 is not available.
  INFO : SSH_MSG_KEXINIT sent
  INFO : SSH_MSG_KEXINIT received
  INFO : kex: server-&gt;client aes128-ctr hmac-md5 none
  INFO : kex: client-&gt;server aes128-ctr hmac-md5 none
  INFO : SSH_MSG_KEXDH_INIT sent
  INFO : expecting SSH_MSG_KEXDH_REPLY
  INFO : ssh_rsa_verify: signature true
  WARN : Permanently added '11.22.33.44' (RSA) to the list of known hosts.
  INFO : SSH_MSG_NEWKEYS sent
  INFO : SSH_MSG_NEWKEYS received
  INFO : SSH_MSG_SERVICE_REQUEST sent
  INFO : SSH_MSG_SERVICE_ACCEPT received
  INFO : Authentications that can continue: publickey,keyboard-interactive,password
  INFO : Next authentication method: publickey
  INFO : Authentications that can continue: keyboard-interactive,password
  INFO : Next authentication method: keyboard-interactive
  INFO : Authentication succeeded (keyboard-interactive).
  INFO : Disconnecting from 11.22.33.44 port 22
  INFO : Caught an exception, leaving main loop due to socket closed
  </code></pre>
  
  <p><strong>EDIT</strong>
  I had an idea to backstep releases in a <a href="http://search.maven.org/#search%7Cgav%7C1%7Cg%3A%22com.jcraft%22%20AND%20a%3A%22jsch%22" rel="noreferrer">Maven repository</a> and actually it is this very new release not working properly. Previous jsch-0.1.52.jar release works fine. I try to contact library developers.</p>
  
  <p>This is a log from a working 0.1.52 release.</p>
  
  <pre class="lang-none prettyprint-override"><code>INFO : Connecting to 11.22.33.44 port 22
  INFO : Connection established
  INFO : Remote version string: SSH-2.0-OpenSSH_6.6.1
  INFO : Local version string: SSH-2.0-JSCH-0.1.52
  INFO : CheckCiphers: aes256-ctr,aes192-ctr,aes128-ctr,aes256-cbc,aes192-cbc,aes128-cbc,3des-ctr,arcfour,arcfour128,arcfour256
  INFO : aes256-ctr is not available.
  INFO : aes192-ctr is not available.
  INFO : aes256-cbc is not available.
  INFO : aes192-cbc is not available.
  INFO : CheckKexes: diffie-hellman-group14-sha1,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521
  INFO : diffie-hellman-group14-sha1 is not available.
  INFO : ecdh-sha2-nistp256 is not available.
  INFO : ecdh-sha2-nistp384 is not available.
  INFO : ecdh-sha2-nistp521 is not available.
  INFO : CheckSignatures: ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521
  INFO : ecdsa-sha2-nistp256 is not available.
  INFO : ecdsa-sha2-nistp384 is not available.
  INFO : ecdsa-sha2-nistp521 is not available.
  INFO : SSH_MSG_KEXINIT sent
  INFO : SSH_MSG_KEXINIT received
  INFO : kex: server: curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group-exchange-sha1,diffie-hellman-group14-sha1,diffie-hellman-group1-sha1
  INFO : kex: server: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256,ssh-ed25519
  INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,aes128-gcm@openssh.com,aes256-gcm@openssh.com,chacha20-poly1305@openssh.com,aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,rijndael-cbc@lysator.liu.se
  INFO : kex: server: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  INFO : kex: server: hmac-md5-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-ripemd160-etm@openssh.com,hmac-sha1-96-etm@openssh.com,hmac-md5-96-etm@openssh.com,hmac-md5,hmac-sha1,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,hmac-ripemd160@openssh.com,hmac-sha1-96,hmac-md5-96
  INFO : kex: server: none,zlib@openssh.com
  INFO : kex: server: none,zlib@openssh.com
  INFO : kex: server:
  INFO : kex: server:
  INFO : kex: client: diffie-hellman-group1-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256
  INFO : kex: client: ssh-rsa,ssh-dss
  INFO : kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
  INFO : kex: client: aes128-ctr,aes128-cbc,3des-ctr,3des-cbc,blowfish-cbc
  INFO : kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
  INFO : kex: client: hmac-md5,hmac-sha1,hmac-sha2-256,hmac-sha1-96,hmac-md5-96
  INFO : kex: client: none
  INFO : kex: client: none
  INFO : kex: client:
  INFO : kex: client:
  INFO : kex: server-&gt;client aes128-ctr hmac-md5 none
  INFO : kex: client-&gt;server aes128-ctr hmac-md5 none
  INFO : SSH_MSG_KEXDH_INIT sent
  INFO : expecting SSH_MSG_KEXDH_REPLY
  INFO : ssh_rsa_verify: signature true
  WARN : Permanently added '11.22.33.44' (RSA) to the list of known hosts.
  INFO : SSH_MSG_NEWKEYS sent
  INFO : SSH_MSG_NEWKEYS received
  INFO : SSH_MSG_SERVICE_REQUEST sent
  INFO : SSH_MSG_SERVICE_ACCEPT received
  INFO : Authentications that can continue: publickey,keyboard-interactive,password
  INFO : Next authentication method: publickey
  INFO : Authentications that can continue: keyboard-interactive,password
  INFO : Next authentication method: keyboard-interactive
  INFO : Authentication succeeded (keyboard-interactive).
  </code></pre>