Program: 128
Project: 128
Buggy source:
public void handle(String pathInContext,Request request,HttpServletRequest httpRequest,HttpServletResponse httpResponse) throws IOException, ServletException {
  if (httpRequest.getHeader("String_Node_Str") != null) {
    httpResponse.setContentLength(1);
  }
  httpResponse.setContentType("String_Node_Str");
  Enumeration<?> e=httpRequest.getHeaderNames();
  String param;
  while (e.hasMoreElements()) {
    param=e.nextElement().toString();
    if (param.startsWith("String_Node_Str")) {
      try {
        Thread.sleep(40 * 1000);
      }
 catch (      InterruptedException ex) {
      }
    }
    if (param.startsWith("String_Node_Str")) {
      httpResponse.sendRedirect(httpRequest.getHeader("String_Node_Str"));
      return;
    }
    httpResponse.addHeader("String_Node_Str" + param,httpRequest.getHeader(param));
  }
  Enumeration<?> i=httpRequest.getParameterNames();
  StringBuilder requestBody=new StringBuilder();
  while (i.hasMoreElements()) {
    param=i.nextElement().toString();
    httpResponse.addHeader("String_Node_Str" + param,httpRequest.getParameter(param));
    requestBody.append(param);
    requestBody.append("String_Node_Str");
  }
  String pathInfo=httpRequest.getPathInfo();
  if (pathInfo != null)   httpResponse.addHeader("String_Node_Str",pathInfo);
  String queryString=httpRequest.getQueryString();
  if (queryString != null)   httpResponse.addHeader("String_Node_Str",queryString);
  httpResponse.addHeader("String_Node_Str",httpRequest.getRemoteAddr() + "String_Node_Str" + httpRequest.getRemotePort());
  javax.servlet.http.Cookie[] cs=httpRequest.getCookies();
  if (cs != null) {
    for (    javax.servlet.http.Cookie c : cs) {
      httpResponse.addCookie(c);
    }
  }
  if (requestBody.length() > 0) {
    httpResponse.getOutputStream().write(requestBody.toString().getBytes());
  }
  int size=10 * 1024;
  if (httpRequest.getContentLength() > 0) {
    size=httpRequest.getContentLength();
  }
  byte[] bytes=new byte[size];
  if (bytes.length > 0) {
    int read=httpRequest.getInputStream().read(bytes);
    if (read > 0) {
      httpResponse.getOutputStream().write(bytes,0,read);
    }
  }
  httpResponse.setStatus(200);
  httpResponse.getOutputStream().flush();
  httpResponse.getOutputStream().close();
}

Fixed version (ground truth):
public void handle(String pathInContext,Request request,HttpServletRequest httpRequest,HttpServletResponse httpResponse) throws IOException, ServletException {
  if (httpRequest.getHeader("String_Node_Str") != null) {
    httpResponse.setContentLength(1);
  }
  if (httpRequest.getHeader("String_Node_Str") != null) {
    httpResponse.setContentType("String_Node_Str");
  }
 else {
    httpResponse.setContentType("String_Node_Str");
  }
  Enumeration<?> e=httpRequest.getHeaderNames();
  String param;
  while (e.hasMoreElements()) {
    param=e.nextElement().toString();
    if (param.startsWith("String_Node_Str")) {
      try {
        Thread.sleep(40 * 1000);
      }
 catch (      InterruptedException ex) {
      }
    }
    if (param.startsWith("String_Node_Str")) {
      httpResponse.sendRedirect(httpRequest.getHeader("String_Node_Str"));
      return;
    }
    httpResponse.addHeader("String_Node_Str" + param,httpRequest.getHeader(param));
  }
  Enumeration<?> i=httpRequest.getParameterNames();
  StringBuilder requestBody=new StringBuilder();
  while (i.hasMoreElements()) {
    param=i.nextElement().toString();
    httpResponse.addHeader("String_Node_Str" + param,httpRequest.getParameter(param));
    requestBody.append(param);
    requestBody.append("String_Node_Str");
  }
  String pathInfo=httpRequest.getPathInfo();
  if (pathInfo != null)   httpResponse.addHeader("String_Node_Str",pathInfo);
  String queryString=httpRequest.getQueryString();
  if (queryString != null)   httpResponse.addHeader("String_Node_Str",queryString);
  httpResponse.addHeader("String_Node_Str",httpRequest.getRemoteAddr() + "String_Node_Str" + httpRequest.getRemotePort());
  javax.servlet.http.Cookie[] cs=httpRequest.getCookies();
  if (cs != null) {
    for (    javax.servlet.http.Cookie c : cs) {
      httpResponse.addCookie(c);
    }
  }
  if (requestBody.length() > 0) {
    httpResponse.getOutputStream().write(requestBody.toString().getBytes());
  }
  int size=10 * 1024;
  if (httpRequest.getContentLength() > 0) {
    size=httpRequest.getContentLength();
  }
  byte[] bytes=new byte[size];
  if (bytes.length > 0) {
    int read=httpRequest.getInputStream().read(bytes);
    if (read > 0) {
      httpResponse.getOutputStream().write(bytes,0,read);
    }
  }
  httpResponse.setStatus(200);
  httpResponse.getOutputStream().flush();
  httpResponse.getOutputStream().close();
}