When client sends an invalid token to my server, the server will return 500 status code. I think that is ugly. Wouldn't 400 (bad request) code be more correct?
If 400 code is more correct then how to handle 500 error? I tried to catch SignatureException and throw ResponseStatusException but then I receive a response like this:
{
"timestamp": "2020-10-17T09:34:26.939+00:00",
"status": 500,
"error": "Internal Server Error",
"message": "400 BAD_REQUEST \"cause: token is invalid\"",
"path": "/toucan/user/delete"
}
My specified message and status code are in message in error with code 500. Is there a way to throw 400 status without 500?
First, let's talk about the status code.
If the token sent is invalid, then the user is not authorized to use API which is 401 status code.
Then let's talk about how to intercept your exception in Spring. You should check the official documentation and either use #ResponseStatus(value=HttpStatus.UNAUTHORIZED, reason="Invalid Token") on SignatureException class (or catch it and throw a custom Exception with the annotation).
Either implement a #ControllerAdvice to handle exceptions through methods with the following annotation : #ExceptionHandler(value = SignatureException.class).
Both solutions are mentionned in the documentation.
How to check if response code is 421 because im trying to send email but connection sometimes get disconnect so it return 421 instead of 220
ERROR
Expected response code 220 but got code "421", with message "421
Cannot connect to SMTP server 74.125.200.108 (74.125.200.108:587),
connect error 10060"
You're able to catch errors and handle them accordingly with try/catch . For example:
try {
// Code that should be tried
} catch (\Exception $e) {
// Handle exception
}
When connecting via a non-secured protocol (http), my MVC 5 web application returns the error message properly. But the moment I connect via https, the error message is blank. Thought? NOTE: I try json return also. Thanks!
Browser debugger output
HTTP
HTTPS
MVC Controller:
string message = string.Join(" ", errors);
Response.StatusCode = (int)HttpStatusCode.RequestedRangeNotSatisfiable;
return new HttpStatusCodeResult(Response.StatusCode, string.Join(" ", message));
Script:
function ajaxOnFailure(response, status, error) {
debugger;
if (response.status == 500) {
error = "An internal error has occurred. Please try again. If the problem persists, please contact IT."
}
toastr.error("", error);
}
I ended up using a workaround. Instead of return a fail response, I return OK response and determine the type of message via jquery. It would have been nice if a fail response return the message via https.
I am hoping for some direction on this error. I have a loop that connects with the google places API. Every few times I test it I get an HTTP request failed error. But when I take the API call from the error it works in a browser or in postman. Any suggestions for what might be causing this? Thanks for all of your help. Here is my API call and the error.
$googleApiPlaceUri = 'https://maps.googleapis.com/maps/api/place/textsearch/json';
foreach ($attractions as $attraction) {
$api_call = "{$googleApiPlaceUri}?query={$attraction}+in+{$city}&key={$api_key}";
$api_return_array[] = json_decode(file_get_contents($api_call));
foreach ($api_return_array as $result) {
$results = $result->results;
array_push($results_array, $results);
}
}
Here is the error I get...
Warning: file_get_contents(https://maps.googleapis.com/maps/api/place/textsearch/json?query=hiking +in+Denver&key=API_KEY): failed to open stream: HTTP request failed! HTTP/1.0 400 Bad Request
status - contains the status of the request like
("success", "notmodified", "error", "timeout", or "parsererror") /ajax or post
I know what is success,not modified,error meant here but I am unable to find out how to handle this errors. If the call back is success then update my div, if there is any error not modified, error, time out, parse error then let me alert a pop up some error occurred.
What would be the cause for each type of error? I mean the situations where not modified,timeout,error and parseerror occurs.
If it results success, then does it mean my post request has successfully worked?
My local-server xampp never results any error, the status is always success. I guess, since its limited to my system but when I put my website online there exists several issues like traffic on server.
So how do I find out, whether my post request to some sample.php page was successfully sent and else pop out an alert to user if something went wrong?
The error types are a little self-explanatory. They simply provide a string for you to easily handle the different errors.
error callback option is invoked, if the request fails. It receives the jqXHR, a string indicating the error type, and an exception object if applicable. Some built-in errors will provide a string as the exception object: "abort", "timeout", "No Transport".
Source: jQuery.Ajax documentation
Codes Explained:
Error: Any of the HTTP response codes, like the well-know 404 (not found) or other internal server errors.
Notmodified: Compares the cached version of the browser with the server's version. If they are the same, the server responds with a 304
Timeout: Ajax requests are time-limited, so errors can be caught and handled to provide a better user experience. Request timeouts are usually either left at their default or set as a global default using $.ajaxSetup() rather than being overridden for specific requests with the timeout option.
Parse Error: The jQuery data (JSON) cannot be parsed (usually due to syntax errors)
Handling these error codes:
Here is some example of handling the errors
$(function() {
$.ajaxSetup({
error: function(jqXHR, exception) {
if (jqXHR.status === 0) {
alert('Not connect.\n Verify Network.');
} else if (jqXHR.status == 404) {
alert('Requested page not found. [404]');
} else if (jqXHR.status == 500) {
alert('Internal Server Error [500].');
} else if (exception === 'parsererror') {
alert('Requested JSON parse failed.');
} else if (exception === 'timeout') {
alert('Time out error.');
} else if (exception === 'abort') {
alert('Ajax request aborted.');
} else {
alert('Uncaught Error.\n' + jqXHR.responseText);
}
}
});
});
Source: Blog Post - jQuery Error Handling
Success
Response code is between 200-299 or is 304 Not Modified.
Not Modified
Response code is 304. If you employ caching, the browser can tell the server which version it currently has, and the server compares this with its version and if there has been no change, it can send a 304 Not Modified response, to indicate to the client that their version is up to date. In jQuery ajax, a 304 Not Modified response will still fire the success handler.
Error
Response code is between 400-599. This could be for example 404 not found, 403 forbidden, 500 internal server error etc.
Parse Error
This is a jQuery internal, not actually a HTTP response. This will happen if jQuery is trying to parse JSON or XML that is not in the valid format or has syntax errors.
Timeout
Again, this isn't a HTTP response. The ajax request has a timeout which if is exceeded before the server responds, will abort the request.
If you control the server side, in your example a PHP script, and you never change the response code using header() then your ajax will always receive 200 OK responses unless there is an unhandled exception in the PHP which will trigger a 500 internal server error.
It is acceptable to always send 200 OK response codes. For example, if the server outputs a JSON object which contains its own success/error flag then any errors can be handled by looking at the flag.
As far as I know
not modified: Server sends a Not Modified(304) response status
timeout: the server has not responded within the time period specified by the timeout property
error: server response with a error status like 4xx or 5xx
parseerror: there was an client side error when processing server response like an invalid json format/xml format