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make server reject to many requests

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This commit is contained in:
Val Erastov 2014-10-04 12:08:23 -07:00
parent c312c96c97
commit 02af7c1622
1 changed files with 28 additions and 13 deletions
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41
src/cad/SolveServer.java
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@ -37,7 +37,7 @@ public class SolveServer {
ResourceHandler rh = new ResourceHandler();
rh.setDirectoriesListed(true);
rh.setResourceBase("/home/verastov/Dropbox/project/cadit/web");
rh.setResourceBase("/home/xibyte/Dropbox/project/cadit/web");
handlers.addHandler(rh);
server.setHandler(handlers);
@ -49,26 +49,41 @@ public class SolveServer {
class SolveHandler extends AbstractHandler {
volatile boolean busy = false;
public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
if (!request.getRequestURI().startsWith("/solve")) {
return;
}
BufferedReader reader = request.getReader();
String jsonStr = new Scanner(reader).useDelimiter("\\A").next();
System.out.println("REQUEST: " + jsonStr);
JSONObject json = new JSONObject(jsonStr);
JSONObject solved = solve(json);
System.out.println("RESPONSE: " + solved);
response.setContentType("application/json;charset=utf-8");
response.setStatus(HttpServletResponse.SC_OK);
baseRequest.setHandled(true);
response.getWriter().println(solved.toString());
if (busy) {
response.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
return;
}
synchronized (this) {
if (busy) return;
busy = true;
try {
BufferedReader reader = request.getReader();
String jsonStr = new Scanner(reader).useDelimiter("\\A").next();
System.out.println("REQUEST: " + jsonStr);
JSONObject json = new JSONObject(jsonStr);
JSONObject solved = solve(json);
System.out.println("RESPONSE: " + solved);
response.setContentType("application/json;charset=utf-8");
response.setStatus(HttpServletResponse.SC_OK);
response.getWriter().println(solved.toString());
} finally {
busy = false;
}
}
}
private JSONObject solve(JSONObject req) {