Example usage for org.apache.commons.net MalformedServerReplyException initCause

Introduction

In this page you can find the example usage for org.apache.commons.net MalformedServerReplyException initCause.

Prototype

public synchronized Throwable initCause(Throwable cause) 

Source Link

Document

Initializes the cause of this throwable to the specified value.

Usage

From source file:nl.nn.adapterframework.ftp.FTPsClient.java

private Object _readReply(InputStream in, boolean concatenateLines) throws IOException {
    // obtain the result
    BufferedReader reader = new BufferedReader(new InputStreamReader(in, "ISO-8859-1"));

    int replyCode = 0;
    StringBuffer reply = new StringBuffer();
    List replyList = new ArrayList();
    String line = reader.readLine();

    if (line == null)
        throw new FTPConnectionClosedException("Connection closed without indication.");
    reply.append(line).append("\n");
    replyList.add(line);/* w w  w  . ja  v  a2s .  co  m*/

    // In case we run into an anomaly we don't want fatal index exceptions
    // to be thrown.
    int length = line.length();
    if (length < 3)
        throw new MalformedServerReplyException("Truncated server reply: " + line);

    try {
        String code = line.substring(0, 3);
        replyCode = Integer.parseInt(code);
    } catch (NumberFormatException e) {
        MalformedServerReplyException mfre = new MalformedServerReplyException(
                "Could not parse response code.\nServer Reply [" + line + "]");
        mfre.initCause(e);
        throw mfre;
    }

    // Get extra lines if message continues.
    if (length > 3 && line.charAt(3) == '-') {
        do {
            line = reader.readLine();
            if (line == null)
                throw new FTPConnectionClosedException(
                        "Connection closed without indication after having read [" + reply.toString() + "]");

            reply.append(line).append("\n");
            replyList.add(line);
        } while (!(line.length() >= 4 && line.charAt(3) != '-' && Character.isDigit(line.charAt(0))));
    }

    if (replyCode == FTPReply.SERVICE_NOT_AVAILABLE)
        throw new FTPConnectionClosedException("FTP response 421 received. Server closed connection.");

    if (!FTPReply.isPositiveCompletion(replyCode))
        throw new IOException("Exception while sending command \n" + reply.toString());

    log.debug("_readReply [" + reply.toString() + "]");

    if (concatenateLines) {
        return reply.toString();
    }
    return (String[]) replyList.toArray(new String[0]);
}

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