我正在尝试使用camel netty4组件实现UDP握手。在接收hello消息中，应用程序将在hello消息中将标记标记为 ACKed 并将其发送回发起者（processRoute）。
下面的计时器路由模拟从UDP_REMOTE发送到我们的应用程序（UDP_LOCAL）的定期问候消息。 checkRoute检查发起者是否收到 ACKed 问候消息。
使用下面的代码，看起来组件正在导致无限的反馈循环。涉及的核心库是camel-spring-boot（2.16.1）和spring-boot（1.3.2.RELEASE）。我知道那一定是我的错。如果有人能告诉我这样做的正确方法会很棒。提前谢谢。
// define currentColumnCount outside the function scope so it can be compared when window is resized
var currentColumnCount;
var attributeToIndex; // switch to src for actual, title for debug/human-readable
function rearrangePhotos(performRearrange) {
// if not performing rearragement, index titles instead of src for debug/human
attributeToIndex = (!performRearrange) ? 'title' : 'src';
// get current number of columns being displayed
currentColumnCount = $('.autofit-photo-grid').css('column-count');
// create arrays to store values in
var originalPhotoMatrix, reversePhotoMatrix, columnPerimeters;
originalPhotoMatrix = new Array();
reversePhotoMatrix = new Array();
columnPerimeters = new Array();
// loop through all the images to compare their left & top perimeters to determine their cell position
$('.autofit-photo-grid img').each(function() {
// if the left perimeter is not found in the array, its a new column
if (columnPerimeters.indexOf($(this).offset().left) == -1)
columnPerimeters[columnPerimeters.length] = $(this).offset().left; // create new columnPerimeter record
}); // end loop
// sort the columns to be in consecutive order
columnPerimeters = columnPerimeters.sort(function(a, b) {
return a - b
});
// now that we have the perimeters of each column, let's figure out which cell each photo belongs to
var colCounter = 1;
var rowCounter = 1;
// loop through all the raw image objects again
$('.autofit-photo-grid img').each(function() {
// get the current position of the image again to determine which column it's in
var currentOffset = $(this).offset().left;
// get the column based on the position of the current image
var currentCol = columnPerimeters.indexOf(currentOffset) + 1;
// if we encounter a new column, reset and increment our col/row counters accordingly
if (currentCol != colCounter) {
colCounter++;
rowCounter = 1;
}
// assign the matrix index to a data attr on the img
$(this).attr('data-matrix-key', rowCounter + ',' + colCounter);
// assign original and reverse matrix values
originalPhotoMatrix[rowCounter + ',' + colCounter] = $(this).attr(attributeToIndex);
reversePhotoMatrix[colCounter + ',' + rowCounter] = $(this).attr(attributeToIndex);
// increment the row counter before restarting the loop
rowCounter++;
}); // end loop
// sort the original matrix by key so that it's in the proper order before generating key list for
// final version of reversePhotoMatrix
originalPhotoMatrix = ksort(originalPhotoMatrix);
// assign matrix id by looping through existing matrix keys/indexes
var availableKeys = new Array(); // create array to store keys/indexes in
for (var key in originalPhotoMatrix) { // loop through the keys and contents of the original matrix
availableKeys[availableKeys.length] = key; // add this key to the list of available keys
} // end loop
// generate the new photo matrix based on the next available key from the old matrix
var c = 0; // intialize counter
reversePhotoMatrix = new Array(); // clear array to prevent any unused/leftover/nonexistent values from lingering
// loop through the images....AGAIN
$('.autofit-photo-grid img').each(function() {
// determine the next available matrix key/index based on the current counter value
var nextAvailableKey = availableKeys[c];
// reassign new key/index and value to reverse photo matrix
reversePhotoMatrix[nextAvailableKey] = $(this).attr(attributeToIndex);
c++; // increment the counter before restarting the loop
}); // end loop
// finally, loop through all the original matrix items and grab the corresponding item from the reverse matrix
console.log("\n\nRearrange ready\n\n"); // just a console comment
// loop through all keys and values in the original matrix
for (var key in originalPhotoMatrix) {
if (!performRearrange) // if performRearrange=false, only display console output
console.log('Swap ' + originalPhotoMatrix[key] + ' with ' + reversePhotoMatrix[key]);
if (performRearrange) // if performRearrange=true, perform the actual rearrangement
$('.autofit-photo-grid img[data-matrix-key="' + key + '"]').attr(attributeToIndex, reversePhotoMatrix[key]);
} // end loop
} // end rearrangePhotos function
// This is just to attach the click event to the text/link at the top
$('.rearrange-link').click(function() {
// on the first click, call rearrangePhotos(performRearrange=false)
rearrangePhotos(false);
// Now change the link text to instruct the next click
$(this).text('Now rearrange them');
// Now attempt to rearrange the actual photo sources with rearrangePhotos(performRearrange=true)
$(this).click(function() {
rearrangePhotos(true);
});
});
// Run the rearrangePhotos() function everytime the window size is adjusted
$(window).resize(function() {
if ( currentColumnCount != $('.autofit-photo-grid').css('column-count') )
rearrangePhotos(false);
});
日志看起来像这样
private static final String UDP_LOCAL = "netty4:udp://localhost:4466";
private static final String UDP_REMOTE = "netty4:udp://localhost:8899";
private static final AtomicInteger counter = new AtomicInteger();
private final class PrintProcessor implements Processor {
private final String name;
public PrintProcessor(String name) {
this.name = name;
}
@Override
public void process(Exchange exchange) throws Exception {
byte[] body = exchange.getIn().getBody(byte[].class);
System.err.println(name + "\t[b]==>" + new String(body));
}
}
@Bean
public RouteBuilder RouteBuilder() {
return new RouteBuilder() {
@Override
public void configure() throws Exception {
from("timer://poller?period=5s").process(exchange -> {
exchange.getIn().setBody("Hello" + counter.incrementAndGet());
System.err.println("Sending Hello...");
}).to(UDP_LOCAL);
from(UDP_LOCAL).id("processRoute").process(new PrintProcessor("processRoute")).to(UDP_REMOTE);
from(UDP_REMOTE).id("checkRoute").process(new PrintProcessor("checkRoute"));
}
};
}
答案 0 :(得分：2)
它与netty组件的请求/响应的配置有关。
检查端点上的sync属性以禁用netty组件上的响应。
private static final String UDP_LOCAL = "netty4:udp://localhost:4466?sync=false";
private static final String UDP_REMOTE = "netty4:udp://localhost:8899?sync=false";