php - Upgrading Laravel 5.5 to 5.6 error

Question

I am trying to upgrade my Laravel 5.5 to 5.6. I have followed the instructions from the laravel website, yet I got this error:

Your requirements could not be resolved to an installable set of packages.
    Problem 1
        - The requested package laravel/framework 5.6.* is satisfiable by laravel/framework[5.6.x-dev] but these conflict with your requirements or minimum-stability.

So, I changed my composer.json file and added 2 lines: **"minimum-stability": "dev", "prefer-stable": true,** based on the first answer on this laracast discussion.

Everything seemed to be working just fine until I got another error:

Loading composer repositories with package information
Updating dependencies (including require-dev)
Package operations: 0 installs, 6 updates, 0 removals
  - Updating sebastian/diff (2.0.1 => 3.0.0): Downloading (100%)         
  - Updating phpunit/phpunit-mock-objects (5.0.6 => 6.0.0): Downloading (100%)    - Updating phpunit/php-timer (1.0.9 => 2.0.0): Downloading (100%)         
  - Updating phpunit/php-token-stream (2.0.2 => 3.0.0): Downloading (100%)        - Updating phpunit/php-code-coverage (5.3.0 => 6.0.1): Downloading (100%)       - Updating phpunit/phpunit (6.5.6 => 7.0.0): Downloading (100%)         
Writing lock file
Generating optimized autoload files
> IlluminateFoundationComposerScripts::postAutoloadDump
> @php artisan package:discover

In trustedproxy.php line 66:

  Undefined class constant 'HEADER_CLIENT_IP'  


Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

The problem on line 66 is IlluminateHttpRequest::HEADER_CLIENT_IP => 'X_FORWARDED_FOR',. I have searched other posts on stackoverflow but still no luck. The last thing I tried was composer selfupdate and composer global update which was mentioned on the post composer dump-autoload not recognized command

Also, I cannot remove "minimum-stability": "dev","prefer-stable": true because if I do, then I will get the following error:

    - Installation request for laravel/framework 5.6.* -> satisfiable by laravel/framework[5.6.x-dev].
- Removal request for laravel/framework == 5.6.9999999.9999999-dev

I have attached my composer.json file and trustedproxy.php respectively. Any help will be highly appreciated.

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "minimum-stability": "dev",
"prefer-stable": true,
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": ">=7.1.3",
        "fideloper/proxy": "~3.3",
        "laravel/framework": "5.6.*",
        "laravel/tinker": "~1.0"
    },
    "require-dev": {
        "filp/whoops": "~2.0",
        "fzaninotto/faker": "~1.4",
        "mockery/mockery": "~1.0",
        "phpunit/phpunit": "~7.0",
        "symfony/thanks": "^1.0"
    },
    "autoload": {
        "classmap": [
            "database/seeds",
            "database/factories"
        ],
        "psr-4": {
            "App": "app/"
        }
    },
    "autoload-dev": {
        "psr-4": {
            "Tests": "tests/"
        }
    },
    "extra": {
        "laravel": {
            "dont-discover": [
            ]
        }
    },
    "scripts": {
        "post-root-package-install": [
            "@php -r "file_exists('.env') || copy('.env.example', '.env');""
        ],
        "post-create-project-cmd": [
            "@php artisan key:generate"
        ],
        "post-autoload-dump": [
            "Illuminate\Foundation\ComposerScripts::postAutoloadDump",
            "@php artisan package:discover"
        ]
    },
    "config": {
        "preferred-install": "dist",
        "sort-packages": true,
        "optimize-autoloader": true
    }
}

trustedproxy.php (error in line 66--> IlluminateHttpRequest::HEADER_CLIENT_IP => 'X_FORWARDED_FOR',)

<?php

return [

    /*
     * Set trusted proxy IP addresses.
     *
     * Both IPv4 and IPv6 addresses are
     * supported, along with CIDR notation.
     *
     * The "*" character is syntactic sugar
     * within TrustedProxy to trust any proxy
     * that connects directly to your server,
     * a requirement when you cannot know the address
     * of your proxy (e.g. if using Rackspace balancers).
     *
     * The "**" character is syntactic sugar within
     * TrustedProxy to trust not just any proxy that
     * connects directly to your server, but also
     * proxies that connect to those proxies, and all
     * the way back until you reach the original source
     * IP. It will mean that $request->getClientIp()
     * always gets the originating client IP, no matter
     * how many proxies that client's request has
     * subsequently passed through.
     */
    'proxies' => [
        '192.168.1.10',
    ],

    /*
     * Or, to trust all proxies that connect
     * directly to your server, uncomment this:
     */
     # 'proxies' => '*',

    /*
     * Or, to trust ALL proxies, including those that
     * are in a chain of forwarding, uncomment this:
    */
    # 'proxies' => '**',

    /*
     * Default Header Names
     *
     * Change these if the proxy does
     * not send the default header names.
     *
     * Note that headers such as X-Forwarded-For
     * are transformed to HTTP_X_FORWARDED_FOR format.
     *
     * The following are Symfony defaults, found in
     * SymfonyComponentHttpFoundationRequest::$trustedHeaders
     *
     * You may optionally set headers to 'null' here if you'd like
     * for them to be considered untrusted instead. Ex:
     *
     * IlluminateHttpRequest::HEADER_CLIENT_HOST  => null,
     * 
     * WARNING: If you're using AWS Elastic Load Balancing or Heroku,
     * the FORWARDED and X_FORWARDED_HOST headers should be set to null 
     * as they are currently unsupported there.
     */
    'headers' => [
        (defined('IlluminateHttpRequest::HEADER_FORWARDED') ? IlluminateHttpRequest::HEADER_FORWARDED : 'forwarded') => 'FORWARDED',
        IlluminateHttpRequest::HEADER_CLIENT_IP    => 'X_FORWARDED_FOR',
        IlluminateHttpRequest::HEADER_CLIENT_HOST  => 'X_FORWARDED_HOST',
        IlluminateHttpRequest::HEADER_CLIENT_PROTO => 'X_FORWARDED_PROTO',
        IlluminateHttpRequest::HEADER_CLIENT_PORT  => 'X_FORWARDED_PORT',
    ]
];

IlluminateHttpRequest file:

<?php

namespace IlluminateHttp;

use Closure;
use ArrayAccess;
use RuntimeException;
use IlluminateSupportArr;
use IlluminateSupportStr;
use IlluminateSupportTraitsMacroable;
use IlluminateContractsSupportArrayable;
use SymfonyComponentHttpFoundationParameterBag;
use SymfonyComponentHttpFoundationRequest as SymfonyRequest;

class Request extends SymfonyRequest implements Arrayable, ArrayAccess
{
    use ConcernsInteractsWithContentTypes,
        ConcernsInteractsWithFlashData,
        ConcernsInteractsWithInput,
        Macroable;

    /**
     * The decoded JSON content for the request.
     *
     * @var SymfonyComponentHttpFoundationParameterBag|null
     */
    protected $json;

    /**
     * All of the converted files for the request.
     *
     * @var array
     */
    protected $convertedFiles;

    /**
     * The user resolver callback.
     *
     * @var Closure
     */
    protected $userResolver;

    /**
     * The route resolver callback.
     *
     * @var Closure
     */
    protected $routeResolver;

    /**
     * Create a new Illuminate HTTP request from server variables.
     *
     * @return static
     */
    public static function capture()
    {
        static::enableHttpMethodParameterOverride();

        return static::createFromBase(SymfonyRequest::createFromGlobals());
    }

    /**
     * Return the Request instance.
     *
     * @return $this
     */
    public function instance()
    {
        return $this;
    }

    /**
     * Get the request method.
     *
     * @return string
     */
    public function method()
    {
        return $this->getMethod();
    }

    /**
     * Get the root URL for the application.
     *
     * @return string
     */
    public function root()
    {
        return rtrim($this->getSchemeAndHttpHost().$this->getBaseUrl(), '/');
    }

    /**
     * Get the URL (no query string) for the request.
     *
     * @return string
     */
    public function url()
    {
        return rtrim(preg_replace('/?.*/', '', $this->getUri()), '/');
    }

    /**
     * Get the full URL for the request.
     *
     * @return string
     */
    public function fullUrl()
    {
        $query = $this->getQueryString();

        $question = $this->getBaseUrl().$this->getPathInfo() == '/' ? '/?' : '?';

        return $query ? $this->url().$question.$query : $this->url();
    }

    /**
     * Get the full URL for the request with the added query string parameters.
     *
     * @param  array  $query
     * @return string
     */
    public function fullUrlWithQuery(array $query)
    {
        $question = $this->getBaseUrl().$this->getPathInfo() == '/' ? '/?' : '?';

        return count($this->query()) > 0
            ? $this->url().$question.http_build_query(array_merge($this->query(), $query))
            : $this->fullUrl().$question.http_build_query($query);
    }

    /**
     * Get the current path info for the request.
     *
     * @return string
     */
    public function path()
    {
        $pattern = trim($this->getPathInfo(), '/');

        return $pattern == '' ? '/' : $pattern;
    }

    /**
     * Get the current decoded path info for the request.
     *
     * @return string
     */
    public function decodedPath()
    {
        return rawurldecode($this->path());
    }

    /**
     * Get a segment from the URI (1 based index).
     *
     * @param  int  $index
     * @param  string|null  $default
     * @return string|null
     */
    public function segment($index, $default = null)
    {
        return Arr::get($this->segments(), $index - 1, $default);
    }

    /**
     * Get all of the segments for the request path.
     *
     * @return array
     */
    public function segments()
    {
        $segments = explode('/', $this->decodedPath());

        return array_values(array_filter($segments, function ($value) {
            return $value !== '';
        }));
    }

    /**
     * Determine if the current request URI matches a pattern.
     *
     * @param  dynamic  $patterns
     * @return bool
     */
    public function is(...$patterns)
    {
        foreach ($patterns as $pattern) {
            if (Str::is($pattern, $this->decodedPath())) {
                return true;
            }
        }

        return false;
    }

    /**
     * Determine if the route name matches a given pattern.
     *
     * @param  dynamic  $patterns
     * @return bool
     */
    public function routeIs(...$patterns)
    {
        return $this->route() && $this->route()->named(...$patterns);
    }

    /**
 

Answer 1

I did this and it works perfectly.

1. composer.json:

From:

"require": {
        "php": ">=7.0.0",
        "fideloper/proxy": "~3.3",
        "laravel/framework": "5.5.*",
        "laravel/tinker": "~1.0"
    },

To:

"require": {
        "php": ">=7.1.3",
        "fideloper/proxy": "~4.0",
        "laravel/framework": "5.6.*",
        "laravel/tinker": "~1.0"
    },

2. Replace appHttpMiddlewareTrustedProxies.php file with contents below:

<?php

namespace AppHttpMiddleware;

use IlluminateHttpRequest;
use FideloperProxyTrustProxies as Middleware;

class TrustProxies extends Middleware
{
    /**
     * The trusted proxies for this application.
     *
     * @var array
     */
    protected $proxies;

    /**
     * The headers that should be used to detect proxies.
     *
     * @var string
     */
    protected $headers = Request::HEADER_X_FORWARDED_ALL;
}

3. composer update