private final String readMSG(final int len)
throws IOException, InterruptedException, MessagingNetworkException {
if (len > 65000)
ServerConnection.throwProtocolViolated("incoming message is too long: " + len + " bytes");
byte[] b = new byte[len];
InputStream is = getInputStream();
synchronized (is) {
long abortTime =
System.currentTimeMillis() + 1000 * MSNMessagingNetwork.REQPARAM_SOCKET_TIMEOUT_SECONDS;
int ofs = 0;
while (ofs < len) {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
int read = is.read(b, ofs, len - ofs);
if (read < 0) read = 0;
ofs += read;
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
/*
if (len >= buffer.length)
{
...
return ...;
}
int pos = findCRLF();
if (pos != -1) break;
fill(is, abortTime);
*/
}
String msg = new String(b, 0, len, "UTF-8");
return msg;
}
}
public final void writeASCII(String s) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + s);
os.write(s.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.flush();
}
}
public final String readCommand(byte[] b)
throws IOException, InterruptedException, MessagingNetworkException {
InputStream is = getInputStream();
synchronized (is) {
long abortTime =
System.currentTimeMillis() + 1000 * MSNMessagingNetwork.REQPARAM_SOCKET_TIMEOUT_SECONDS;
int ofs = 0;
boolean d = false;
for (; ; ) {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
int by = is.read();
if (by == -1) throw new IOException("unexpected EOF");
if (by == 10 && d) break;
d = (by == 13);
if (ofs < b.length) {
b[ofs++] = (byte) by;
}
if (System.currentTimeMillis() > abortTime) throw new IOException("connection timed out");
/*
if (len >= buffer.length)
{
...
return ...;
}
int pos = findCRLF();
if (pos != -1) break;
fill(is, abortTime);
*/
}
if (b[ofs - 1] == 13) --ofs;
String line = new String(b, 0, ofs, "ASCII");
if (StringUtil.startsWith(line, "MSG")) {
StringTokenizer st = new StringTokenizer(line);
String len_s = null;
while (st.hasMoreTokens()) {
len_s = st.nextToken();
}
if (len_s == null) throw new AssertException("len_s is null");
int len;
try {
len = Integer.parseInt(len_s);
} catch (NumberFormatException ex) {
ServerConnection.throwProtocolViolated("MSG length must be int");
len = 0;
}
String msg = readMSG(len);
line = line + "\r\n" + msg;
}
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("S: " + line);
return line;
}
}
/**
* UTF byte count is appended to the asciiPrefix, then UTF bytes are appended to the result; the
* final result is sent.
*/
public final void writeMSG(String asciiPrefix, String msgBody) throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
OutputStream os = getOutputStream();
synchronized (os) {
byte[] utfBytes = msgBody.getBytes("UTF-8");
asciiPrefix = asciiPrefix + ' ' + utfBytes.length;
if (Defines.DEBUG && CAT.isDebugEnabled()) CAT.debug("C: " + asciiPrefix + "\r\n" + msgBody);
os.write(asciiPrefix.getBytes("ASCII"));
os.write((byte) 13);
os.write((byte) 10);
os.write(utfBytes);
os.flush();
}
}
public final int available() throws IOException {
if (Thread.currentThread().isInterrupted()) throw new InterruptedIOException();
if (isClosed()) throw new IOException("connection closed");
return getInputStream().available();
}