public void sendResponseHeaders(int rCode, long contentLen) throws IOException {
if (sentHeaders) {
throw new IOException("headers already sent");
}
this.rcode = rCode;
String statusLine = "HTTP/1.1 " + rCode + Code.msg(rCode) + "\r\n";
OutputStream tmpout = new BufferedOutputStream(ros);
PlaceholderOutputStream o = getPlaceholderResponseBody();
tmpout.write(bytes(statusLine, 0), 0, statusLine.length());
boolean noContentToSend = false; // assume there is content
rspHdrs.set("Date", df.format(new Date()));
if (contentLen == 0) {
if (http10) {
o.setWrappedStream(new UndefLengthOutputStream(this, ros));
close = true;
} else {
rspHdrs.set("Transfer-encoding", "chunked");
o.setWrappedStream(new ChunkedOutputStream(this, ros));
}
} else {
if (contentLen == -1) {
noContentToSend = true;
contentLen = 0;
}
/* content len might already be set, eg to implement HEAD resp */
if (rspHdrs.getFirst("Content-length") == null) {
rspHdrs.set("Content-length", Long.toString(contentLen));
}
o.setWrappedStream(new FixedLengthOutputStream(this, ros, contentLen));
}
write(rspHdrs, tmpout);
this.rspContentLen = contentLen;
tmpout.flush();
tmpout = null;
sentHeaders = true;
if (noContentToSend) {
WriteFinishedEvent e = new WriteFinishedEvent(this);
server.addEvent(e);
closed = true;
}
server.logReply(rCode, req.requestLine(), null);
}
void write(Headers map, OutputStream os) throws IOException {
Set<Map.Entry<String, List<String>>> entries = map.entrySet();
for (Map.Entry<String, List<String>> entry : entries) {
String key = entry.getKey();
byte[] buf;
List<String> values = entry.getValue();
for (String val : values) {
int i = key.length();
buf = bytes(key, 2);
buf[i++] = ':';
buf[i++] = ' ';
os.write(buf, 0, i);
buf = bytes(val, 2);
i = val.length();
buf[i++] = '\r';
buf[i++] = '\n';
os.write(buf, 0, i);
}
}
os.write('\r');
os.write('\n');
}