HTTP Server Log

// HTTP Server Log / Kiri Vadivelu / 2026

// Log HTTP requests to a file

define( 'HTTP_LOG_FILE', WP_CONTENT_DIR . '/http-requests.log' );

function my_log_http_request( $response, $request, $url ) {

    $log_entry = [

        'time' => current_time( 'mysql' ),   

        'method'  => $request['method'],

        'url'     => $url,

        'body'    => $request['body'] ?? '',

    ];

    if ( $response instanceof WP_Error ) {

        $log_entry['status'] = 'ERROR';

        $log_entry['detail'] = $response->get_error_message();

    } else {

        $log_entry['status'] = wp_remote_retrieve_response_code( $response );

        $log_entry['detail'] = wp_remote_retrieve_response_message( $response );

    }

    // Append as a single JSON line

    file_put_contents(

        HTTP_LOG_FILE,

        wp_json_encode( $log_entry ) . "\n",

        FILE_APPEND | LOCK_EX

    );

     // Trim to last 200 entries

    $lines = file( HTTP_LOG_FILE, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES );

    if ( count( $lines ) > 200 ) {

        $lines = array_slice( $lines, -200 );

        file_put_contents( HTTP_LOG_FILE, implode( "\n", $lines ) . "\n", LOCK_EX );

    }

    return $response;

}

add_filter( 'http_response', 'my_log_http_request', 10, 3 );

// Create admin menu page

function my_http_logs_menu() {

    add_menu_page(

        'HTTP Logs',       // Page title

        'Server Log',       // Menu label

        'manage_options',  // Capability

        'http-logs',       // Slug

        'my_http_logs_page'

    );

}

add_action( 'admin_menu', 'my_http_logs_menu' );

// Render the log viewer

function my_http_logs_page() {

    if ( ! current_user_can( 'manage_options' ) ) {

        wp_die( 'Insufficient permissions.' );

    }

    $lines = [];

    if ( file_exists( HTTP_LOG_FILE ) ) {

        $lines = file( HTTP_LOG_FILE, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES );

        $lines = array_reverse( $lines ); // newest first

    }

    ?>

    <div class="wrap">

        <h1 style="text-align: center;">HTTP Requests Log</h1>

        <p><em>File: <code><?php echo esc_html( HTTP_LOG_FILE ); ?></code></em></p>

        <?php if ( empty( $lines ) ) : ?>

            <p>No HTTP requests logged yet.</p>

        <?php else : ?>

        <table class="wp-list-table widefat fixed striped">

            <thead>

                <tr>

                    <th>Time</th>

                    <th>Method</th>

                    <th>URL</th>

                    <th>Status</th>

                    <th>Detail</th>

                </tr>

            </thead>

            <tbody>

            <?php foreach ( $lines as $line ) :

                $entry = json_decode( $line, true );

                if ( ! $entry ) continue;

                ?>

                <tr>

                    <td><?php echo esc_html( $entry['time'] ); ?></td>

                    <td><?php echo esc_html( $entry['method'] ); ?></td>

                    <td><code><?php echo esc_html( $entry['url'] ); ?></code></td>

                    <td>

                        <?php

                        $status = $entry['status'];

                        $color  = ( $status >= 200 && $status < 300 ) ? '#00a32a' : '#d63638';

                        echo '<span style="color:' . $color . ';font-weight:bold">' . esc_html( $status ) . '</span>';

                        ?>

                    </td>

                    <td><?php echo esc_html( $entry['detail'] ); ?></td>

                </tr>

            <?php endforeach; ?>

            </tbody>

        </table>

        <?php endif; ?>

    </div>

    <?php

}