PHP fatal error: Uncaught exception 'Exception' with message

Question

I have a PHP script that connects to an api and posts information to their systems, but when its trying to connect it throws a fatal error:

Fatal error: Uncaught exception 'Exception' with message 'Problem with 'http://apitestserver.co.uk:9000/Service.svc/Items' in /var/www/html/e/connect_test.php:17 Stack trace: #0 /var/www/html/e/connect_test.php(39): do_http_request('http://apitest....', 'hello') #1 {main} thrown in /var/www/html/e/connect_test.php on line 17

If I send it to a PHP script which just grabs the IP then it works, but if I send it to the API it doesn't. My PHP script creates XML and then forwards to the server. I was getting errors so I just created the following smaller script purely to test the connection:

function do_http_request($url, $data, $method = 'POST', $optional_headers = 'Content-Type: application/atom+xml') { $params = array( 'http' => array( 'method' => $method, 'content' => $data ) ); if ($optional_headers !== null) { $params['http']['header'] = $optional_headers; } $ctx = stream_context_create($params); $fp = fopen($url, 'rb', false, $ctx); if (!$fp) { throw new Exception("Problem with $url"); } $response = @stream_get_contents($fp); if ($response === false) { throw new Exception("Problem reading data from $url"); } $metaData = stream_get_meta_data($fp); fclose($fp); if(!preg_match('~^HTTP.*([0-9]{3})~', $metaData['wrapper_data'][0], $matches)){ throw new Exception('MALFORED RESPONSE - COULD NOT UNDERSTAND HTTP CODE'); } if (substr($matches[1], 0, 1) != '2') { throw new Exception('SERVER REPORTED HTTP ERROR ' . $matches[1]); } return $response; } $data = 'hello'; $paul = do_http_request('http://apitestserver.co.uk:9000/Service.svc/Items',$data); echo $paul;

If I change the URL to a simple script on another one of our servers which just grabs the IP of the incoming connection and returns it:

 $ip=$_SERVER['REMOTE_ADDR']; echo 'IP equals = ' . $ip;

Then it works fine with no errors.

Update -

with errors on it throws the following warning, probably because the script is not sending the correct info to the API

Warning: fopen(http://apitestserver.co.uk:9000/Service.svc/Items) [function.fopen]: failed to open stream: HTTP request failed! HTTP/1.1 500 Data at the root level is invalid. Line 1, position 1.

Also note that I can access the api server fine using fiddler to send manually created items across, its just when this script tries to connect and send data there is an issue. I wrote another quick script which connects and prints out the default response (an rss feed of submitted items)

When I run the 'main' connector script it throws the following two errors

Warning: fopen() [function.fopen]: php_network_getaddresses: getaddrinfo failed: Name or service not known in /var/www/html/e/sequence.php on line 65 Warning: fopen(http://apitestserver.co.uk:9000/Service.svc/Items) [function.fopen]: failed to open stream: Operation now in progress in /var/www/html/e/sequence.php on line 65

I would suggest that it has something to do with the arrays that you are using, first test if that key exists, then use it. — Anriëtte Myburgh
– Anriëtte Myburgh, Commented Jul 22, 2009 at 13:11
smoove666 yes it works fine, but its a closed server so can you delete reference to it? I can access it fine with a browser,I can also access it with a script and parse the response it provides. — Paul M
– Paul M, Commented Jul 22, 2009 at 13:30

Community · Accepted Answer · 2023-11-21 15:10:29Z

1

I would suggest using curl instead of fopen(). curl is both more flexible, and more secure. Many servers disable allow_url_fopen, curl also fails more gracefully when there are problems on the remote server.

edited Nov 21, 2023 at 15:10

CommunityBot

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answered Jul 22, 2009 at 13:16

acrosman

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2 Comments

Paul M Over a year ago

Have not used Curl much, any pointers on which functions to use?

acrosman Over a year ago

There's a pretty good sample that was posted in June on the example page at php.net: us3.php.net/manual/en/curl.examples.php

Greg · Accepted Answer · 2009-07-22 13:42:02Z

1

I just tested the URL in my browser and got a connection error.

Maybe the problem is with their server (or you have the wrong URL)?

Edit:

Looks like ther server is throwing a 500 error - maybe because the data you're posting is invalid.

You could use a packet sniffer and check the exact data you're sending to the server (or use cURL as suggested by @acrosman)

edited Jul 22, 2009 at 13:42

answered Jul 22, 2009 at 13:11

Greg

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3 Comments

FWH Over a year ago

The guy just removed the real url and put a false one so nobody would access it. "apitestserver.co.uk" should have been clear enough ;)

Paul M Over a year ago

yeah apitestserver is a falsie as the original one is private and locked behind a firewall so no one would be able to see it anyway! But I can access it fine, from the server, as my update says.

Paul M Over a year ago

Yes well spotted, thats because I am not sending the correct data to the API. I will update my main thread with the errors from the main script.

Jeff Atwood · Accepted Answer · 2009-07-23 13:57:59Z

1

apitestserver.co.uk doesn't respond to ping and the url is inaccessable. The API-server doesn't seem to be up.

edited Jul 23, 2009 at 13:57

Jeff Atwood

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answered Jul 22, 2009 at 13:12

Torandi

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2 Comments

Paul M Over a year ago

Its a closed test server, you wont be able to access it without the firewall letting you through. Which it wont, but also its a closed server so could you delete reference to it please :) I thought I had replaced all instances in the original post DOH

Paul M Over a year ago

Note I can access it fine, and i can also access it with a simple script which opens, reads and prints the xml the api returns as default.

songyuanyao · Accepted Answer · 2014-07-01 02:47:26Z

0

or You can change the headers:

$optional_headers = 'Content-Type: application/json')

edited Jul 1, 2014 at 2:47

songyuanyao

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answered Jul 1, 2014 at 2:28

nothingchen

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Comments

Bill the Lizard · Accepted Answer · 2014-08-06 11:08:15Z

First error message suggests problems with apitestserver - it returns error code 500, which states for "Internal server error".

Second one informs that PHP can't resolve host name into IP address - I'd look into DNS configuration and/or hosts file.

Apparently 'fopen' function does not return proper stream. There can be many possibilities when that happens, but according to PHP manual, fopen function on fail should present E_WARNING message with proper commentary. It is possible that you have errors of that class silenced - call error_reporting(E_ALL) at the beginning of your script and look for some relevant error messages.

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