Sendgrid-php: Getting 502 Bad Gateway

Created on 7 Sep 2018 · 7Comments · Source: sendgrid/sendgrid-php

Issue Summary

I get the following error when trying to implement near direct copy of the

Array
(
[0] => HTTP/1.1 502 Bad Gateway
[1] => Server: nginx
[2] => Date: Fri, 07 Sep 2018 00:45:53 GMT
[3] => Content-Type: text/html
[4] => Content-Length: 166
[5] => Connection: keep-alive
[6] => Access-Control-Allow-Origin: https://sendgrid.api-docs.io
[7] => Access-Control-Allow-Methods: POST
[8] => Access-Control-Allow-Headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl
[9] => Access-Control-Max-Age: 600
[10] => X-No-CORS-Reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html
[11] =>
[12] =>
)

502 Bad Gateway

502 Bad Gateway

nginx

Steps to Reproduce

Copied the example:

    //-----------------------------------------------------------
    // Build Message
    //-----------------------------------------------------------
    $email = new \SendGrid\Mail\Mail(); 
    $email->setFrom($this->msg_from[0], $this->msg_from[1]);
    $email->setSubject($this->msg_subject);
    foreach ($this->msg_from as $tmp_msg_to) {
        $email->addTo($tmp_msg_to[0], $tmp_msg_to[1]);
    }
    if ($this->msg_body) {
        $email->addContent("text/plain", $this->msg_body);
    }
    if ($this->msg_html_body) {
        $email->addContent("text/html", $this->msg_html_body);
    }

    //-----------------------------------------------------------
    // Send Message
    //-----------------------------------------------------------
    $sendgrid = new \SendGrid($this->api_key);
    try {
        $response = $sendgrid->send($email);
        print $response->statusCode() . "\n";
        print_r($response->headers());
        print $response->body() . "\n";
    }
    catch (Exception $e) {
        echo 'Caught exception: '. $e->getMessage() ."\n";
    }

Technical details:

sendgrid-php Version: 7.2
Fedora Linux 27
PHP Version: 7.1.18

medium waiting for feedback bug

Source

cclark61

Most helpful comment

I had the same error, for me it was caused by setting an empty Content.

            $fromEmail = '[email protected]';
            $fromName = 'Test A';
            $toEmail = '[email protected]';
            $toName = 'Test B';
            $subject = 'Amazing subject name';
            $message = '';

            $from = new SendGrid\Mail\From($fromEmail, $fromName);
            $to = new SendGrid\Mail\To($toEmail, $toName);
            $content = new SendGrid\Mail\Content('text/html', $message);

            $this->mail = new SendGrid\Mail\Mail(
                $from,
                $to,
                $subject, // subject
                $content
            );

            // Execute other magic code here

$message was '' for me. which caused the issue. I do add a second content to the mail, which is filled but it doesn't like empty content I guess. I am upgrading from the 6 .0 version to the latest 7 version, which causes these issues to appear.

Yihka on 8 May 2019

👍2

All 7 comments

Hello @cclark61,

It looks like there may be a communication issue between your server and ours. Could you please try running a cURL request from the command line of your server to verify?

With Best Regards,

Elmer

thinkingserious on 15 Sep 2018

I'm getting the exact same issue. I made sure my API key has all the privileges.

I did a manual request using Postman, tried one with Curl as well. I dumped everything straight from the Client::makeRequest() method and replicated all the variables. Same result.

Request Headers

Content-Type: application/json
Authorization: Bearer <My API Key>
User-Agent: sendgrid/7.2.0;php
Accept: application/json

Raw JSON Payload of the request

{
    "personalizations": [
        null
    ],
    "from": {
        "name": "Some Name",
        "email": "[email protected]"
    },
    "subject": "Some Subject",
    "content": [
        {
            "type": "text\/html",
            "value": "<html><body>Hello world!</body></html>"
        }
    ]
}

Technical Details

sendgrid-php Version: 7.2
Ubuntu 18.04
PHP Version: 7.2

l0gicgate on 16 Sep 2018

After doing a little bit of digging in the issues I found that apparently what's causing this is a null personalizations property in the body of the request.

This comment by @koenreiniers may be able to help you as well @cclark61
https://github.com/sendgrid/sendgrid-php/issues/650

This is terrible behavior for the record @thinkingserious because the Hello Email example in the docs will produce this behavior. Please fix the docs and make a note about needing at least one personalization to be able to send an email successfully.

l0gicgate on 16 Sep 2018

Thanks @l0gicgate. It seems #686 is the same issue.

cclark61 on 17 Sep 2018

Thanks for all the great feedback everyone!

Note to me: the problem is likely here.

thinkingserious on 28 Sep 2018

I had the same error, for me it was caused by setting an empty Content.

            $fromEmail = '[email protected]';
            $fromName = 'Test A';
            $toEmail = '[email protected]';
            $toName = 'Test B';
            $subject = 'Amazing subject name';
            $message = '';

            $from = new SendGrid\Mail\From($fromEmail, $fromName);
            $to = new SendGrid\Mail\To($toEmail, $toName);
            $content = new SendGrid\Mail\Content('text/html', $message);

            $this->mail = new SendGrid\Mail\Mail(
                $from,
                $to,
                $subject, // subject
                $content
            );

            // Execute other magic code here

Yihka on 8 May 2019

👍2

Thanks for the additional feedback @Yihka!

thinkingserious on 21 May 2019

Was this page helpful?

0 / 5 - 0 ratings