I need to change the request method that is sent to GraphHopper to a POST method. Indeed I send so many points that the GET one crashes. POST requests do not seem to be allowed since I get a 405 error from the server.
How can I allow to send POST method ? Where is the jetty configuration handled ?
Thanks!
That is not a jetty config. You'll have to implement 'doPost' in the GraphHopperServlet
Related
I am writing a http handler for a server and I am looking directly at the http requests when they come in from different clients. I can easily deal with normal http requests. The problem occurs when I get a GET or POST request. I do not know how to access the data from the GET or the POST therefore I cannot continue. Could someone please point me in the direction of some where which deals with the issue on how to access the data. Thanks in advance.
Answer:
to do this:
In a GET request the data comes in the URL itself therefore just parse the URL from the HTTP request and look for the question mark and the arguments.
For a POST request there are 2 different ways however the main one means that the arguments are put in the body of the request like this:
q=hello&v=world
The length is specified in the request as well so if you need it is under Content-Length:
I trying to create a freeboard dashboard. I have a Arduino with four sensors that send their informations by mqtt. So, I on Node-RED I gen a JSON to response get request in /saida.
[{"id":"3f699b5.c91f064","type":"http response","z":"c7d4e8c8.509218","name":"","x":1184,"y":589,"wires":[]},{"id":"a3ed6250.1d64","type":"json","z":"c7d4e8c8.509218","name":"","x":1120.5,"y":540,"wires":[["3f699b5.c91f064"]]},{"id":"971f41c1.a1265","type":"function","z":"c7d4e8c8.509218","name":"","func":"msg.payload = {\"temperatura\":\"25\"}\nreturn msg;","outputs":1,"noerr":0,"x":1015.5,"y":584,"wires":[["a3ed6250.1d64"]]},{"id":"ed9f7a2a.604728","type":"http in","z":"c7d4e8c8.509218","name":"http in","url":"/saida","method":"get","swaggerDoc":"","x":850,"y":582,"wires":[["5b40d38c.5cc7ec","971f41c1.a1265"]]}]
In this moment, I`m using a static JSON to make a test. I have a use the host like:
my-public-host:1880/saida -> {"temperatura":"25"}
I access it by a proxy, the JSON returns ok. On ping.eu port check, the port is open. I ensure that my host is public.
But on my freeboard, I add it as datasource, then it says "never" update and I can`t read the JSON info.
What I should do to solve it?
I solved my problem.
There is a bug in freeboard.io. the thingproxy.freeboard.io don't work. The the browser don't let the freeboard.io make AJAX request for other link that isn't https. Besides, the browser don't let make a AJAX request for an other host.
There is two solutions:
Use sitelock on your host and add Access-Control-Allow-Origin to you response headers.
Use a https proxy and a browser extension to allow cross access.
bye!
Correct.
If the data source is flask based app, you can follow this link below to make freeboard read.
https://flask-cors.readthedocs.io/en/latest/
Say for example I'm try to make a GET Request to www.testjson.com/json, However the response is retrieved from a different domain URL e.g. www.testjson.com/confirmJson.
Does Spring mvc support this, specifically restTemplate.exchange functionality.
I am currently doing this sort of thing, but I am getting an 500 status code (internal server error) and have no way of finding out what exactly is causing the error.
So can RestTemplate actually manage the redirect and provide the necessary JSON response or does it actually wait for the response from the url you provide hence the reason for getting the 500 internal server error?
It is possible to let a RestTemplate automatically follow a redirect.
The server must respond with a Http 3xx and the location header set.
The RestTemplate 'understands' this response and issues a new GET request to the returned location.
This should work with default spring configuration.
See also follow-302-redirect-using-spring-resttemplate
I have been using Mandrill webhooks from a long time and till now I haven't encountered this error.
But now I see this error, I am not sure what has caused this ?
Please let me know why this might be happening and what might be the possible solution for the same.
Is it related to my server handling capacity because I have checked for that as well and Mandrill doesnt have too many concurrent request that it is sending to my Apache server, so according to me that is not an issue and also mysql also doesn't seem to be causing the bottleneck, but then I I have not used any benchmarking tool to determine the same.
Please let me know the solution if you guys have encountered something like this.
It seems that the URL is not responding to the request. There could be a few reasons:
If the URL points to an internal server, a firewall could be blocking it or a port number (if given).
Once set up the webhook will send via a POST HTTP verb, however for testing it sends a HEAD request. Quite often web servers (e.g. IIS) will limit what verbs they respond to and will only respond to GET and POST requests.
If that's working your URL should respond with just headers only to acknowledge the request. (HEAD doesn't allow any page content to be sent) so it should only do something like this for a HEAD request:
<?php header( 'Content-Type:' ); // returning 200 ?>
More details on their site
http://help.mandrill.com/entries/22024856-Why-can-t-my-webhook-or-inbound-route-URL-be-verified-
You may wish to try this tool to see what HTTP header result is being returned (if any) or if another error is being returned, just remember that if the URL is internal, it could be blocked to the outside world.
https://chrome.google.com/webstore/detail/postman-rest-client/fdmmgilgnpjigdojojpjoooidkmcomcm?hl=en
I have a webservice method that if I call directly via url GET returns XML without issue.
However, POST to that same url with Content-Type Json, it fails.
I think I can figure out the issue (I'm guessing it's an encoding or bad character somewhere in there) but I don't know how to debug the problem.
If I set a breakpoint in the webservice, it runs to completion. The failure appears to be happening AFTER the method returns, but BEFORE the json is returned to the caller.
How can I get in between to trace the error?
Please let me know if I can provide more context to help, but I really just need to know how to get in there.
EDIT:
The web service is configured to receive POST and return JSON and in fact DOES correctly return JSON in some cases. However, there are certain calls that are failing, so I need a way to trace this or debug it somehow and figure out why some calls are not working.
The web service is likely not configured to receive POST requests, especially if you are receiving a 405 Method Not Allowed response status.
Although I didn't find a way to debug or intercept the request to find the exact answer, it turns out the problem was the size of the content being returned by the webservice. Following this answer: ASP.NET WebMethod with jQuery json, is there a size limit?
and increasing the json limit fixed the issue!
Is there a way I could have trapped this to find the error without just guessing it was a size limit?