I am trying to use Jsch to connect to a SFTP server. My code looks like below
public void putFile(
final SftpConfig sftpConfig, final InputStream inputStream, final String remoteFileName) {
Session sftpSession = null;
Channel sftpChannel = null;
try {
JSch.setLogger(new MyLogger());
val sftpShell = new JSch();
if (sftpConfig.hasSecretKey()) {
sftpShell.addIdentity(
"dev03sftp.pem", getPassword(sftpConfig.getSecretKey()).getBytes(), null, null);
}
sftpSession =
sftpShell.getSession(
sftpConfig.getUsernamePassword().getUsername(),
sftpConfig.getRemoteHost(),
sftpConfig.getRemotePort());
if (sftpConfig.hasUsernamePassword()) {
sftpSession.setPassword(getPassword(sftpConfig.getUsernamePassword()));
}
sftpSession.setConfig("StrictHostKeyChecking", "no");
sftpSession.setConfig("PreferredAuthentications", "publickey,keyboard-interactive,password");
sftpSession.connect();
sftpChannel = sftpSession.openChannel("sftp");
sftpChannel.connect();
log.info("sftp session connected");
putFileInternal(sftpConfig, (ChannelSftp) sftpChannel, inputStream, remoteFileName);
} catch (final JSchException jSchException) {
throw ExceptionUtils.internalErrorException(
CommonError.CONNECTION_ERROR, "Error in establishing sftp session", jSchException);
} catch (SftpException sftpException) {
throw ExceptionUtils.internalErrorException(
CommonError.CONNECTION_ERROR, "Error in putting file via sftp session", sftpException);
} finally {
if (sftpChannel != null && sftpChannel.isConnected()) {
sftpChannel.disconnect();
}
if (sftpSession != null && sftpSession.isConnected()) {
sftpSession.disconnect();
}
}
}
I am getting the below error from the sftpSession.connect();.
INFO: Connecting to uploads-dev03.dev.spotnana.com port 22
INFO: Connection established
INFO: Remote version string: SSH-2.0-AWS_SFTP_1.1
INFO: Local version string: SSH-2.0-JSCH_0.2.13
INFO: CheckCiphers: chacha20-poly1305@openssh.com
INFO: CheckKexes: curve25519-sha256,curve25519-sha256@libssh.org,curve448-sha512
INFO: CheckSignatures: ssh-ed25519,ssh-ed448
DEBUG: server_host_key proposal before known_host reordering is: ssh-dss,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256
DEBUG: server_host_key proposal after known_host reordering is: ssh-dss,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256
INFO: SSH_MSG_KEXINIT sent
INFO: SSH_MSG_KEXINIT received
INFO: server proposal: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,diffie-hellman-group14-sha1
INFO: server proposal: host key algorithms: rsa-sha2-512,rsa-sha2-256,ssh-rsa
INFO: server proposal: ciphers c2s: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
INFO: server proposal: ciphers s2c: chacha20-poly1305@openssh.com,aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
INFO: server proposal: MACs c2s: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
INFO: server proposal: MACs s2c: umac-64-etm@openssh.com,umac-128-etm@openssh.com,hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,umac-64@openssh.com,umac-128@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
INFO: server proposal: compression c2s: none,zlib@openssh.com
INFO: server proposal: compression s2c: none,zlib@openssh.com
INFO: server proposal: languages c2s:
INFO: server proposal: languages s2c:
INFO: client proposal: KEX algorithms: curve25519-sha256,curve25519-sha256@libssh.org,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521,diffie-hellman-group-exchange-sha256,diffie-hellman-group16-sha512,diffie-hellman-group18-sha512,diffie-hellman-group14-sha256,ext-info-c
INFO: client proposal: host key algorithms: ssh-dss,ssh-ed25519,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,rsa-sha2-512,rsa-sha2-256
INFO: client proposal: ciphers c2s: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
INFO: client proposal: ciphers s2c: aes128-ctr,aes192-ctr,aes256-ctr,aes128-gcm@openssh.com,aes256-gcm@openssh.com
INFO: client proposal: MACs c2s: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
INFO: client proposal: MACs s2c: hmac-sha2-256-etm@openssh.com,hmac-sha2-512-etm@openssh.com,hmac-sha1-etm@openssh.com,hmac-sha2-256,hmac-sha2-512,hmac-sha1
INFO: client proposal: compression c2s: none
INFO: client proposal: compression s2c: none
INFO: client proposal: languages c2s:
INFO: client proposal: languages s2c:
INFO: kex: algorithm: curve25519-sha256
INFO: kex: host key algorithm: rsa-sha2-512
INFO: kex: server->client cipher: aes128-ctr MAC: hmac-sha2-256-etm@openssh.com compression: none
INFO: kex: client->server cipher: aes128-ctr MAC: hmac-sha2-256-etm@openssh.com compression: none
INFO: SSH_MSG_KEX_ECDH_INIT sent
INFO: expecting SSH_MSG_KEX_ECDH_REPLY
INFO: ssh_rsa_verify: rsa-sha2-512 signature true
WARN: Permanently added 'uploads-dev03.dev.spotnana.com' (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_EXT_INFO received
INFO: server-sig-algs=<ssh-ed25519,sk-ssh-ed25519@openssh.com,ssh-rsa,rsa-sha2-256,rsa-sha2-512,ssh-dss,ecdsa-sha2-nistp256,ecdsa-sha2-nistp384,ecdsa-sha2-nistp521,sk-ecdsa-sha2-nistp256@openssh.com,webauthn-sk-ecdsa-sha2-nistp256@openssh.com>
INFO: SSH_MSG_SERVICE_ACCEPT received
INFO: Disconnecting from uploads-dev03.dev.spotnana.com port 22
com.spotnana.exceptions.SpotnanaRuntimeException: INTERNAL: Error in establishing sftp session
at com.spotnana.exceptions.ExceptionUtils.internalErrorException(ExceptionUtils.java:295)
at com.spotnana.ens.channelproviders.file.SftpFileDeliverer.putFile(SftpFileDeliverer.java:74)
at com.spotnana.ens.channelproviders.file.SftpFileDelivererIntegrationTest.testCloudIntegration(SftpFileDelivererIntegrationTest.java:50)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:727)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:156)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:147)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:86)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(InterceptingExecutableInvoker.java:103)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.lambda$invoke$0(InterceptingExecutableInvoker.java:93)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:92)
at org.junit.jupiter.engine.execution.InterceptingExecutableInvoker.invoke(InterceptingExecutableInvoker.java:86)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:217)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:213)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:138)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:68)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:147)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:127)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:90)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:55)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:102)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:54)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: com.jcraft.jsch.JSchException: Session.connect: java.io.IOException: End of IO Stream Read
at com.jcraft.jsch.Session.connect(Session.java:550)
at com.jcraft.jsch.Session.connect(Session.java:189)
at com.spotnana.ens.channelproviders.file.SftpFileDeliverer.putFile(SftpFileDeliverer.java:67)
... 71 more
Caused by: java.io.IOException: End of IO Stream Read
at com.jcraft.jsch.IO.getByte(IO.java:95)
at com.jcraft.jsch.Session.read(Session.java:1076)
at com.jcraft.jsch.UserAuthNone.start(UserAuthNone.java:84)
at com.jcraft.jsch.Session.connect(Session.java:393)
... 73 more
Versions
<!-- https://mvnrepository.com/artifact/com.github.mwiede/jsch -->
<dependency>
<groupId>com.github.mwiede</groupId>
<artifactId>jsch</artifactId>
<version>0.2.13</version>
</dependency>
I do not see any errors on the server side.
I am able to connect to the SFTP server using the Mac SFTP client. Only with Jsch it fails.
debrajmanna@MAC-DEBRAJMANNA-DX6QR261G3 java % sftp -i ~/.ssh/dev03sftp.pem debraj@uploads-dev03.dev.spotnana.com
Connected to uploads-dev03.dev.spotnana.com.
sftp>
debrajmanna@MAC-DEBRAJMANNA-DX6QR261G3 java % which sftp
/usr/bin/sftp
I changed the private key from Openssh to RSA and it worked.
Complete working code
public void putFile(
final SftpConfig sftpConfig, final InputStream inputStream, final String remoteFileName) {
Session sftpSession = null;
Channel sftpChannel = null;
try {
// JSch.setLogger(new MyLogger());
val sftpShell = new JSch();
if (sftpConfig.hasSecretKey()) {
sftpShell.addIdentity(
"key.pem", getPassword(sftpConfig.getSecretKey()).getBytes(), null, null);
sftpSession =
sftpShell.getSession(
sftpConfig.getSecretKey().getUsername(),
sftpConfig.getRemoteHost(),
sftpConfig.getRemotePort());
} else {
sftpSession =
sftpShell.getSession(
sftpConfig.getUsernamePassword().getUsername(),
sftpConfig.getRemoteHost(),
sftpConfig.getRemotePort());
sftpSession.setPassword(getPassword(sftpConfig.getUsernamePassword()));
}
// NB: Turn off host verification since the key is calculated on a per-client basis and will
// be different for each env.
sftpSession.setConfig("StrictHostKeyChecking", "no");
sftpSession.connect();
sftpChannel = sftpSession.openChannel("sftp");
sftpChannel.connect();
log.info("sftp session connected");
putFileInternal(sftpConfig, (ChannelSftp) sftpChannel, inputStream, remoteFileName);
} catch (final JSchException jSchException) {
throw ExceptionUtils.internalErrorException(
CommonError.CONNECTION_ERROR, "Error in establishing sftp session", jSchException);
} catch (SftpException sftpException) {
throw ExceptionUtils.internalErrorException(
CommonError.CONNECTION_ERROR, "Error in putting file via sftp session", sftpException);
} finally {
if (sftpChannel != null && sftpChannel.isConnected()) {
sftpChannel.disconnect();
}
if (sftpSession != null && sftpSession.isConnected()) {
sftpSession.disconnect();
}
}
}
SFTP client was working with both however.