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JSch 0.1.53 session.connect（）が「End of IO Stream Read "」をスローします

新しい JSch 0.1.53ライブラリ をダウンロードしましたが、JSch（sftp）ダウンロードタスクが機能しなくなりました。このリリースは、エラーをスローするsession.connect()関数で失敗しますSession.connect: Java.io.IOException: End of IO Stream Read。

私の古いjsch.jar（2011-10-06）は同じホストで正常に動作します。新しい構成の小道具が欠けているのでしょうか？

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); // <-- FAILS HERE
    channel = (ChannelSftp)session.openChannel("sftp");
    channel.connect(2000);
    ...

これは、何が起こっているかを示す広範なJSchロギングです。

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: [email protected],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,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
INFO : kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
INFO : kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
INFO : kex: server: none,[email protected]
INFO : kex: server: none,[email protected]
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->client aes128-ctr hmac-md5 none
INFO : kex: client->server aes128-ctr hmac-md5 none
INFO : SSH_MSG_KEX_DH_GEX_REQUEST(1024<1024<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)

ダウンロードタスクが正常に機能する非常に古いJsch.jar（2011-10-06）もあります。これはログです。私がアップグレードしたかった理由は、この非常に遅いファイルの転送です。新しいリリースは私が読んだことでもっとうまくいくはずです。

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->client aes128-ctr hmac-md5 none
INFO : kex: client->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

[〜＃〜] edit [〜＃〜]Mavenリポジトリ でリリースをバックステップするアイデアがありましたが、実際にはこの非常に新しいリリースが正しく機能していないのですか？以前のjsch-0.1.52.jarリリースは正常に動作します。ライブラリ開発者に連絡を取ろうとしています。

これは、動作している0.1.52リリースのログです。

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: [email protected],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,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
INFO : kex: server: aes128-ctr,aes192-ctr,aes256-ctr,arcfour256,arcfour128,[email protected],[email protected],[email protected],aes128-cbc,3des-cbc,blowfish-cbc,cast128-cbc,aes192-cbc,aes256-cbc,arcfour,[email protected]
INFO : kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
INFO : kex: server: [email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],[email protected],hmac-md5,hmac-sha1,[email protected],[email protected],hmac-sha2-256,hmac-sha2-512,hmac-ripemd160,[email protected],hmac-sha1-96,hmac-md5-96
INFO : kex: server: none,[email protected]
INFO : kex: server: none,[email protected]
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->client aes128-ctr hmac-md5 none
INFO : kex: client->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).
javasftpjsch
11
Whome

JSch 0.1.53はdiffie-hellman-group-exchange-sha256 KEXをサポート（推奨）します。これはサーバーもサポートすると主張しているため、JSchはそれを使用しようとします。

何らかの理由でサーバーが後で接続を切断しました。

これを回避するには、JSchがdiffie-hellman-group1-sha1 KEXを使用するように強制します。これは、JSch 0.1.52が好むものです。

session.setConfig("kex", "diffie-hellman-group1-sha1");
10
Martin Prikryl

私は同じ問題を抱えていましたが、jschバージョンを0.1.54に変更して解決しました

これをpom.xmlに追加

<dependency>
   <groupId>com.jcraft</groupId>
   <artifactId>jsch</artifactId>
   <version>0.1.54</version>
</dependency>
1
pooja patil