Android/Jsch - SSH Output always empty

Question

I have the exact same problem described here: SSH Output always empty

Unfortunately the accepted answer doesn't work for me, because

bufferedReader.readLine()

ends up in a loop, probably because of the missing end of line.

In addition I don't get why the code in the first posting doesn't work. Anyone with a deeper insight?

thx in advance

EDIT: if i do

while ((line = bufferedReader.readLine()) != null) {
    stringBuilder.append(line);
    stringBuilder.append('\n');
}

AFTER the ssh connection is closed, there is no endless loop, but the output is still empty...

stringBuilder.append(bufferedReader.read());

leads to -1 as output.

just:

stringBuilder.append(bufferedReader.readLine());

results in "null".

what is this madness? i don't get it...

user2158143 · Accepted Answer · 2014-04-08 23:04:44Z

Answer: I was reading the wrong stream AND had to close the connection afterwards.

JSch jsch = new JSch();
Session session = jsch.getSession(username, hostname, 22);
session.setPassword(password);

// Avoid asking for key confirmation
Properties prop = new Properties();
prop.put("StrictHostKeyChecking", "no");
session.setConfig(prop);

session.connect();

// SSH Channel
ChannelExec channelssh = (ChannelExec)
session.openChannel("exec");
InputStream inputStream = channelssh.getInputStream(); 

BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream));
StringBuilder stringBuilder = new StringBuilder();
String line;

/**/
// Execute command
channelssh.setCommand(command);
channelssh.connect();

while ((line = bufferedReader.readLine()) != null) {
    stringBuilder.append(line);
    stringBuilder.append('\n');
}

channelssh.disconnect();

return stringBuilder.toString();

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