Проблема подключения с использованием SFTP и JSch: com.jcraft.jsch.JSchException

Question

При попытке подключиться к моему FTP-серверу с помощью SFTP в порту 22, я получаю следующее исключение.

com.jcraft.jsch.JSchException: java.net.ConnectException: Connection timed out: connect 
    at com.jcraft.jsch.Util.createSocket(Util.java:349) 
    at com.jcraft.jsch.Session.connect(Session.java:215) 
    at com.jcraft.jsch.Session.connect(Session.java:183) 
    at com.mycompany.FTPAdapter.connect(FTPAdapter.java:246) 
    at com.mycompany.FTPWriterTask.ftpTransport(FTPWriterTask.java:210) 
    at com.mycompany.FTPWriterTask.doExecute(FTPWriterTask.java:183) 
    at com.mycompany.AbstractTask.execute(AbstractTask.java:123) 
    at com.mycompany.FTPWriterTaskTest.testExecute_testSFTP(FTPWriterTaskTest.java:203) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at junit.framework.TestCase.runTest(TestCase.java:154) 
    at junit.framework.TestCase.runBare(TestCase.java:127) 
    at junit.framework.TestResult$1.protect(TestResult.java:106) 
    at junit.framework.TestResult.runProtected(TestResult.java:124) 
    at junit.framework.TestResult.run(TestResult.java:109) 
    at junit.framework.TestCase.run(TestCase.java:118) 
    at junit.framework.TestSuite.runTest(TestSuite.java:208) 
    at junit.framework.TestSuite.run(TestSuite.java:203) 
    at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130) 
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) 
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) 
Caused by: java.net.ConnectException: Connection timed out: connect 
    at java.net.DualStackPlainSocketImpl.connect0(Native Method) 
    at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) 
    at java.net.AbstractPlainSocketImpl.connect(Unknown Source) 
    at java.net.PlainSocketImpl.connect(Unknown Source) 
    at java.net.SocksSocketImpl.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.connect(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at java.net.Socket.<init>(Unknown Source) 
    at com.jcraft.jsch.Util.createSocket(Util.java:343) 
    ... 25 more 

Я использую следующий код с библиотекой JDK7u79 и JSch для подключения через SFTP.

try { 
     JSch jsch = new JSch(); 
     session = jsch.getSession(this.getLoginname(), getHostname(), this.getPortInt()); 
     Properties config = new Properties(); 
     config.put("StrictHostKeyChecking", "no"); 
     session.setConfig(config); 
     session.setPassword(this.getPassword()); 
     session.connect(); 
     channel = session.openChannel("sftp"); 
     channel.connect(); 
     sftpChannel = (ChannelSftp) channel; 
    } catch (Exception e) { 
     e.printStackTrace(); 
     String errMsg = "Could not connect to the SFTP site. Reason: " + e.getMessage(); 
     throw new IOException(errMsg); 
    } 

Очень странно, что я могу подключиться к серверу (на порту 22) с помощью клиента WinSCP. Так что мне любопытно, почему он не может подключиться с помощью Java-кода? Я что-то пропустил в коде? Я использую Windows7 и мой FTP-сервер WingFTP на, вероятно, Windows Server 2012.

UPDATE:

в отношении одного из комментариев: Мой FTP-сервер поддерживает SFTP. Используя WinSCP, я могу подключиться к серверу с помощью SFTP. Вот журнал: Обратите внимание, что я скрыл IP по соображениям безопасности.

. 2016-02-22 13:05:37.552 -------------------------------------------------------------------------- 
. 2016-02-22 13:05:37.552 WinSCP Version 5.7.6 (Build 5874) (OS 6.3.9600 - Windows Server 2012 R2 Datacenter) 
. 2016-02-22 13:05:37.552 Configuration: HKCU\Software\Martin Prikryl\WinSCP 2\ 
. 2016-02-22 13:05:37.552 Log level: Normal, Logging passwords 
. 2016-02-22 13:05:37.552 Local account: INTERNAL\zuics 
. 2016-02-22 13:05:37.552 Working directory: C:\Program Files (x86)\WinSCP 
. 2016-02-22 13:05:37.552 Process ID: 2956 
. 2016-02-22 13:05:37.552 Command-line: "C:\Program Files (x86)\WinSCP\WinSCP.exe" 
. 2016-02-22 13:05:37.552 Time zone: Current: GMT+1, Standard: GMT+1 (W. Europe Standard Time), DST: GMT+2 (W. Europe Daylight Time), DST Start: 3/27/2016, DST End: 10/30/2016 
. 2016-02-22 13:05:37.552 Login time: Monday, February 22, 2016 1:05:37 PM 
. 2016-02-22 13:05:37.552 -------------------------------------------------------------------------- 
. 2016-02-22 13:05:37.552 Session name: ICS_Test_SFTP (Site) 
. 2016-02-22 13:05:37.552 Host name: xx.xxx.xx.xxx (Port: 22) 
. 2016-02-22 13:05:37.552 User name: ICS_Test (Password: PbhDMi912, Key file: No) 
. 2016-02-22 13:05:37.552 Tunnel: No 
. 2016-02-22 13:05:37.552 Transfer Protocol: SFTP (SCP) 
. 2016-02-22 13:05:37.552 Ping type: -, Ping interval: 30 sec; Timeout: 15 sec 
. 2016-02-22 13:05:37.552 Disable Nagle: No 
. 2016-02-22 13:05:37.552 Proxy: none 
. 2016-02-22 13:05:37.552 Send buffer: 262144 
. 2016-02-22 13:05:37.552 SSH protocol version: 2; Compression: No 
. 2016-02-22 13:05:37.552 Bypass authentication: No 
. 2016-02-22 13:05:37.552 Try agent: Yes; Agent forwarding: No; TIS/CryptoCard: No; KI: Yes; GSSAPI: No 
. 2016-02-22 13:05:37.552 Ciphers: aes,blowfish,3des,WARN,arcfour,des; Ssh2DES: No 
. 2016-02-22 13:05:37.552 KEX: dh-gex-sha1,dh-group14-sha1,dh-group1-sha1,rsa,WARN 
. 2016-02-22 13:05:37.552 SSH Bugs: A,A,A,A,A,A,A,A,A,A,A,A 
. 2016-02-22 13:05:37.552 Simple channel: Yes 
. 2016-02-22 13:05:37.552 Return code variable: Autodetect; Lookup user groups: A 
. 2016-02-22 13:05:37.552 Shell: default 
. 2016-02-22 13:05:37.552 EOL: 0, UTF: 2 
. 2016-02-22 13:05:37.552 Clear aliases: Yes, Unset nat.vars: Yes, Resolve symlinks: Yes 
. 2016-02-22 13:05:37.552 LS: ls -la, Ign LS warn: Yes, Scp1 Comp: No 
. 2016-02-22 13:05:37.552 SFTP Bugs: A,A 
. 2016-02-22 13:05:37.552 SFTP Server: default 
. 2016-02-22 13:05:37.552 Local directory: C:\Users\zuics\Documents, Remote directory: /, Update: Yes, Cache: Yes 
. 2016-02-22 13:05:37.552 Cache directory changes: Yes, Permanent: Yes 
. 2016-02-22 13:05:37.552 DST mode: 1 
. 2016-02-22 13:05:37.552 -------------------------------------------------------------------------- 
. 2016-02-22 13:05:37.624 Looking up host "xx.xxx.xx.xxx" 
. 2016-02-22 13:05:37.624 Connecting to xx.xxx.xx.xxx port 22 
. 2016-02-22 13:05:37.672 Server version: SSH-2.0-WeOnlyDo-WingFTP 
. 2016-02-22 13:05:37.672 We believe remote version has SSH-2 rekey bug 
. 2016-02-22 13:05:37.672 Using SSH protocol version 2 
. 2016-02-22 13:05:37.672 We claim version: SSH-2.0-WinSCP_release_5.7.6 
. 2016-02-22 13:05:37.710 Doing Diffie-Hellman group exchange 
. 2016-02-22 13:05:37.905 Doing Diffie-Hellman key exchange with hash SHA-1 
. 2016-02-22 13:05:37.959 Verifying host key rsa2 0x10001,0xb0ba835d0c1ec6a2 11c75258f75f1433 ff5881c58f62a609 4d7f82a9d7666936 4fdc87ab95940ca3 28fbd48e1d9294fa db00b8d56173420d dff1e9e93827e4c1 64e8b615f670db33 6be0bddfc130b136 4f490f351f64def8 480e8e360f8f0cc8 55b8022b7bdebde3 79ad43b862fd1d3c d896f44dc6561dbb af983f7a78399af7 with fingerprint ssh-rsa 1024 fc:92:54:e6:06:04:1a:97:8c:8c:cb:a7:72:e0:86:52 
. 2016-02-22 13:05:37.976 Host key matches cached key 
. 2016-02-22 13:05:37.976 Host key fingerprint is: 
. 2016-02-22 13:05:37.976 ssh-rsa 1024 fc:92:54:e6:06:04:1a:97:8c:8c:cb:a7:72:e0:86:52 
. 2016-02-22 13:05:37.976 Initialised AES-128 CBC client->server encryption 
. 2016-02-22 13:05:37.976 Initialised HMAC-SHA1 client->server MAC algorithm 
. 2016-02-22 13:05:37.976 Initialised AES-128 CBC server->client encryption 
. 2016-02-22 13:05:37.976 Initialised HMAC-SHA1 server->client MAC algorithm 
! 2016-02-22 13:05:38.173 Using username "ICS_Test". 
. 2016-02-22 13:05:38.206 Prompt (password, "SSH password", <no instructions>, "&Password: ") 
. 2016-02-22 13:05:38.207 Using stored password. 
. 2016-02-22 13:05:38.254 Sent password 
. 2016-02-22 13:05:38.260 Access granted 
. 2016-02-22 13:05:38.260 Opening session as main channel 
. 2016-02-22 13:05:38.261 Opened main channel 
. 2016-02-22 13:05:38.481 Started a shell/command 
. 2016-02-22 13:05:38.488 -------------------------------------------------------------------------- 
. 2016-02-22 13:05:38.488 Using SFTP protocol. 
. 2016-02-22 13:05:38.489 Doing startup conversation with host. 
> 2016-02-22 13:05:38.535 Type: SSH_FXP_INIT, Size: 5, Number: -1 
< 2016-02-22 13:05:38.543 Type: SSH_FXP_VERSION, Size: 5, Number: -1 
. 2016-02-22 13:05:38.543 SFTP version 3 negotiated. 
. 2016-02-22 13:05:38.543 We believe the server has signed timestamps bug 
. 2016-02-22 13:05:38.543 We will use UTF-8 strings until server sends an invalid UTF-8 string as with SFTP version 3 and older UTF-8 string are not mandatory 
. 2016-02-22 13:05:38.543 Changing directory to "/". 
. 2016-02-22 13:05:38.543 Getting real path for '/' 
> 2016-02-22 13:05:38.543 Type: SSH_FXP_REALPATH, Size: 10, Number: 16 
< 2016-02-22 13:05:38.552 Type: SSH_FXP_NAME, Size: 23, Number: 16 
. 2016-02-22 13:05:38.552 Real path is '/' 
. 2016-02-22 13:05:38.552 Trying to open directory "/". 
> 2016-02-22 13:05:38.552 Type: SSH_FXP_LSTAT, Size: 10, Number: 263 
< 2016-02-22 13:05:38.566 Type: SSH_FXP_ATTRS, Size: 37, Number: 263 
. 2016-02-22 13:05:38.566 Getting current directory name. 
. 2016-02-22 13:05:38.718 Listing directory "/". 
> 2016-02-22 13:05:38.718 Type: SSH_FXP_OPENDIR, Size: 10, Number: 523 
< 2016-02-22 13:05:38.721 Type: SSH_FXP_HANDLE, Size: 12, Number: 523 
> 2016-02-22 13:05:38.721 Type: SSH_FXP_READDIR, Size: 12, Number: 780 
< 2016-02-22 13:05:38.735 Type: SSH_FXP_NAME, Size: 133, Number: 780 
> 2016-02-22 13:05:38.735 Type: SSH_FXP_READDIR, Size: 12, Number: 1036 
< 2016-02-22 13:05:38.749 Type: SSH_FXP_STATUS, Size: 28, Number: 1036 
< 2016-02-22 13:05:38.749 Status code: 1 
> 2016-02-22 13:05:38.749 Type: SSH_FXP_CLOSE, Size: 12, Number: 1284 
. 2016-02-22 13:05:38.749 Adaptiv 360_v3.pdf;-;577093;2016-02-17T15:09:38.000Z;"user" [0];"group" [0];rwxrwxrwx;1 
. 2016-02-22 13:05:38.809 Startup conversation with host finished. 

Answer 1

Я ошибался при настройке пароля. Он устанавливается после ввода правильного пароля. Не стоит публиковать этот вопрос.