public NetResponse pullFile(
String strUrl, String strFileName, IRhoSession oSession, Hashtable headers) throws Exception {
IRAFile file = null;
NetResponse resp = null;
m_nMaxPacketSize = RhoClassFactory.getNetworkAccess().getMaxPacketSize();
m_bFlushFileAfterWrite = RhoConf.getInstance().getBool("use_persistent_storage");
m_bCancel = false;
try {
if (!strFileName.startsWith("file:")) {
try {
strFileName = FilePath.join(RhoClassFactory.createFile().getDirPath(""), strFileName);
} catch (IOException x) {
LOG.ERROR("getDirPath failed.", x);
throw x;
}
}
file = RhoClassFactory.createFSRAFile();
file.open(strFileName, "rw");
file.seek(file.size());
do {
resp = pullFile1(strUrl, file, file.size(), oSession, headers);
} while (!m_bCancel
&& (resp == null || resp.isOK())
&& m_nCurDownloadSize > 0
&& m_nMaxPacketSize > 0);
} finally {
if (file != null) {
file.close();
file = null;
}
}
copyHashtable(m_OutHeaders, headers);
return resp != null && !m_bCancel
? resp
: makeResponse("", IHttpConnection.HTTP_INTERNAL_ERROR);
}
NetResponse pullFile1(
String strUrl, IRAFile file, long nStartPos, IRhoSession oSession, Hashtable headers)
throws Exception {
String strRespBody = null;
InputStream is = null;
int code = -1;
try {
closeConnection();
m_connection = RhoClassFactory.getNetworkAccess().connect(strUrl, true);
if (oSession != null) {
String strSession = oSession.getSession();
if (strSession != null && strSession.length() > 0)
m_connection.setRequestProperty("Cookie", strSession);
}
m_connection.setRequestProperty("Connection", "keep-alive");
if (nStartPos > 0 || m_nMaxPacketSize > 0) {
if (m_nMaxPacketSize > 0)
m_connection.setRequestProperty(
"Range", "bytes=" + nStartPos + "-" + (nStartPos + m_nMaxPacketSize - 1));
else m_connection.setRequestProperty("Range", "bytes=" + nStartPos + "-");
}
writeHeaders(headers);
m_connection.setRequestMethod(IHttpConnection.GET);
code = m_connection.getResponseCode();
LOG.INFO("getResponseCode : " + code);
m_nCurDownloadSize = 0;
readHeaders(headers);
if (code == IHttpConnection.HTTP_RANGENOTSATISFY) code = IHttpConnection.HTTP_PARTIAL_CONTENT;
else {
if (code != IHttpConnection.HTTP_OK && code != IHttpConnection.HTTP_PARTIAL_CONTENT) {
LOG.ERROR("Error retrieving data: " + code);
if (code == IHttpConnection.HTTP_UNAUTHORIZED) oSession.logout();
if (code != IHttpConnection.HTTP_INTERNAL_ERROR) {
is = m_connection.openInputStream();
strRespBody = readFully(is, getResponseEncoding());
}
} else {
int nRead = 0;
is = m_connection.openInputStream();
byte[] byteBuffer = new byte[1024 * 20];
do {
nRead = /*bufferedReadByByte(m_byteBuffer, is);*/ is.read(byteBuffer);
if (nRead > 0) {
file.write(byteBuffer, 0, nRead);
if (m_bFlushFileAfterWrite) file.sync();
m_nCurDownloadSize += nRead;
}
} while (!m_bCancel && nRead >= 0);
if (code == IHttpConnection.HTTP_OK
|| (code == IHttpConnection.HTTP_PARTIAL_CONTENT && isFinishDownload()))
m_nCurDownloadSize = 0;
}
}
} finally {
if (is != null)
try {
is.close();
} catch (IOException exc) {
}
closeConnection();
}
return makeResponse(strRespBody != null ? strRespBody : "", code);
}