docs: public static int remotePost(String[] args) throws Exception {
          String projectName = args[0];
  
          String home = getHudsonHome();
          if(!home.endsWith("/"))     home = home + '/';  // make sure it ends with '/'
  
          // check for authentication info
          String auth = new URL(home).getUserInfo();
          if(auth != null) auth = "Basic " + new Base64Encoder().encode(auth.getBytes(StandardCharsets.UTF_8));
  
          {// check if the home is set correctly
              HttpURLConnection con = open(new URL(home));
              if (auth != null) con.setRequestProperty("Authorization", auth);
              con.connect();
              if(con.getResponseCode()!=200
              || con.getHeaderField("X-Hudson")==null) {
                  System.err.println(home+" is not Hudson ("+con.getResponseMessage()+")");
                  return -1;
              }
          }
  
          URL jobURL = new URL(home + "job/" + Util.encode(projectName).replace("/", "/job/") + "/");
  
          {// check if the job name is correct
              HttpURLConnection con = open(new URL(jobURL, "acceptBuildResult"));
              if (auth != null) con.setRequestProperty("Authorization", auth);
              con.connect();
              if(con.getResponseCode()!=200) {
                  System.err.println(jobURL + " is not a valid external job (" + con.getResponseCode() + " " + con.getResponseMessage() + ")");
                  return -1;
              }
          }
  
          // get a crumb to pass the csrf check
          String crumbField = null, crumbValue = null;
          try {
              HttpURLConnection con = open(new URL(home +
                      "crumbIssuer/api/xml?xpath=concat(//crumbRequestField,\":\",//crumb)'"));
              if (auth != null) con.setRequestProperty("Authorization", auth);
              String line = IOUtils.readFirstLine(con.getInputStream(),"UTF-8");
              String[] components = line.split(":");
              if (components.length == 2) {
                  crumbField = components[0];
                  crumbValue = components[1];
              }
          } catch (IOException e) {
              // presumably this Hudson doesn't use CSRF protection
          }
  
          // write the output to a temporary file first.
          File tmpFile = File.createTempFile("jenkins","log");
          try {
              int ret;
              try (OutputStream os = Files.newOutputStream(tmpFile.toPath());
                   Writer w = new OutputStreamWriter(os, StandardCharsets.UTF_8)) {
                  w.write("<?xml version='1.1' encoding='UTF-8'?>");
                  w.write("<run><log encoding='hexBinary' content-encoding='"+Charset.defaultCharset().name()+"'>");
                  w.flush();
  
                  // run the command
                  long start = System.currentTimeMillis();
  
                  List<String> cmd = new ArrayList<>();
                  cmd.addAll(Arrays.asList(args).subList(1, args.length));
                  Proc proc = new Proc.LocalProc(cmd.toArray(new String[0]),(String[])null,System.in,
                      new DualOutputStream(System.out,new EncodingStream(os)));
  
                  ret = proc.join();
  
                  w.write("</log><result>"+ret+"</result><duration>"+(System.currentTimeMillis()-start)+"</duration></run>");
              } catch (InvalidPathException e) {
                  throw new IOException(e);
              }
  
              URL location = new URL(jobURL, "postBuildResult");
              while(true) {
                  try {
                      // start a remote connection
                      HttpURLConnection con = open(location);
                      if (auth != null) con.setRequestProperty("Authorization", auth);
                      if (crumbField != null && crumbValue != null) {
                          con.setRequestProperty(crumbField, crumbValue);
                      }
                      con.setDoOutput(true);
                      // this tells HttpURLConnection not to buffer the whole thing
                      con.setFixedLengthStreamingMode((int)tmpFile.length());
                      con.connect();
                      // send the data
                      try (InputStream in = Files.newInputStream(tmpFile.toPath())) {
                          org.apache.commons.io.IOUtils.copy(in, con.getOutputStream());
                      } catch (InvalidPathException e) {
                          throw new IOException(e);
                      }
  
                      if(con.getResponseCode()!=200) {
                          org.apache.commons.io.IOUtils.copy(con.getErrorStream(), System.err);
                      }
  
                      return ret;
                  } catch (HttpRetryException e) {
                      if(e.getLocation()!=null) {
                          // retry with the new location
                          location = new URL(e.getLocation());
                          continue;
                      }
                      // otherwise failed for reasons beyond us.
                      throw e;
                  }
              }
          } finally {
              tmpFile.delete();
          }
      }