private void writeData(CometConnection c, CometMessage msg) throws IOException {
c.setDyingTime(System.currentTimeMillis());
PrintWriter writer;
HttpServletResponse response = c.getResponse();
response.setCharacterEncoding("UTF-8");
response.setContentType("text/html;charset=UTF-8");
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
writer = response.getWriter();
writer.print(CometProtocol.encode(msg));
close(c);
}
/**
* 为一个连接发送一条消息
*
* @param c
* @param e
*/
synchronized void sendTo(CometConnection c, CometMessage msg) {
if (c == null) {
return;
}
if (CometProtocol.STATE_DYING.equals(c.getState()) || c.getResponse() == null) {
cacher.push(c, msg);
return;
}
try {
writeData(c, msg);
} catch (IOException e1) {
e1.printStackTrace();
}
}
private void close(CometConnection c) throws IOException {
if (c.getResponse() != null) {
if (c.getWorkStyle().equals(CometProtocol.WORKSTYLE_LLOOP)) {
c.setState(CometProtocol.STATE_DYING);
try {
c.getResponse().getWriter().close();
} catch (Exception e) {
}
c.setResponse(null);
} else {
try {
c.getResponse().flushBuffer();
} catch (Exception e) {
}
}
}
}