Difference between revisions for Users / Eo Ny / dev

Additions:

# HTTP Class Technical Documentation
## Overview
The `Http` class (`src/class/http.php`) is a core component of the WackoWiki system responsible for handling HTTP request/response processing, session management, caching, and security features. This class acts as a bridge between the web server and the wiki engine.
File Location: `src/class/http.php`
Dependencies: Database class, Session classes, Utility classes (`Ut`), Diagnostics class (`Diag`)

## Class Properties
### Public Properties
| Property | Type | Description |
|

`php

`
Purpose: Initializes the Http object and sets up HTTP session handling.
Parameters:
- `$db` - Database object reference
Initialization Steps:
1. Stores database reference
2. Extracts and normalizes REQUEST_URI
3. Detects TLS/HTTPS session status
4. Determines client's real IP address
5. Sets up TLS mark cookie name
6. Enforces TLS session upgrade if needed
Example:

`php

`

## Core Methods
### Session Management
`session($route): void`
Initializes the session handler (file-based or database-based).
Parameters:
- `$route` (int) - Routing flag:

Bit 2 (`$route & 2`): Enable static mode for files/freecap (disables replay prevention and ID regeneration)

Features:
- Selects storage backend (file or database)
- Configures cookie settings (security, path, httponly)
- Binds IP and TLS validation
- Recovers diagnostic logs from previous session
Example:

`php

`

### Caching System
`check_cache($page, $method): void`
Determines if a page can be cached and prepares the cache check.
Parameters:
- `$page` (string) - Page name to cache
- `$method` (string) - Request method/action (e.g., 'show', 'edit')
Caching Rules:
- ✅ Enabled for GET requests only
- ✅ Disabled for POST requests
- ❌ Never cached for 'edit' or 'watch' methods
- ✅ Only cached for anonymous users (no logged-in users)
Example:

`php

`

`store_cache(): void`
Saves the generated page content to cache file.
Features:
- Retrieves output buffer content
- Saves to cache file with proper permissions
- Records cache metadata in database
- Only executes if caching flag is set and user is anonymous
Example:

`php

`

`invalidate_page($page): int`
Invalidates all cached versions of a page.
Parameters:
- `$page` (string) - Page name to invalidate
Returns:
- Number of cache entries invalidated
Process:
1. Finds all cached versions (different methods/languages)
2. Touches files to past timestamp (faster than deletion)
3. Removes entries from cache metadata table
4. Returns count of invalidated caches
Example:

`php

`

### TLS/HTTPS Security
`secure_base_url(): void`
Switches base URL from HTTP to HTTPS.
Purpose:
- Ensures all subsequent URLs use HTTPS
- Stores original HTTP URL for fallback
- Called when TLS session is detected
Example:

`php

`

`ensure_tls($url): void`
Enforces HTTPS for a specific URL and redirects if necessary.
Parameters:
- `$url` (string) - URL to secure
Behavior:
- If not already HTTPS and TLS is enabled, forces HTTPS redirect
- Handles both relative and absolute URLs
- Converts relative URLs using current server name
Example:

`php

`

### IP Address Detection
`real_ip(): string` (Private)
Detects client's real IP address accounting for proxies.
Proxy Headers Checked (in order):
1. `HTTP_X_CLUSTER_CLIENT_IP`
2. `HTTP_X_FORWARDED_FOR` (or custom header)
3. `HTTP_CLIENT_IP`
4. `HTTP_X_REMOTE_ADDR`
5. `REMOTE_ADDR` (fallback)
Features:
- Filters out private/reserved IP ranges
- Respects configured reverse proxy addresses
- Returns `'0.0.0.0'` as fallback
Configuration in Database:
- `reverse_proxy_addresses` - Comma/space-separated proxy IPs
- `reverse_proxy_header` - Custom header name (default: `X-Forwarded-For`)
Example:

`php

`

### HTTPS Detection
`tls_session(): bool` (Private)
Detects if current connection uses HTTPS/TLS.
Checks (any being true = HTTPS):
- `$_SERVER['HTTPS']` is 'on'
- `$_SERVER['SERVER_PORT']` is 443
- `$_SERVER['HTTP_X_FORWARDED_PROTO']` is 'https'
- `$_SERVER['HTTP_X_FORWARDED_SSL']` is 'on'
- `$_SERVER['HTTP_X_FORWARDED_PORT']` is 443

### Security Headers
`http_security_headers(): void`
Sets security-related HTTP headers.
Headers Set:
| Header | Purpose | Config Key |
|

`php

`

### HTTP Methods
`redirect($url, $permanent = false): void`
Performs an HTTP redirect.
Parameters:
- `$url` (string) - Target URL
- `$permanent` (bool) - Use 301 (permanent) vs 302 (temporary)
Features:
- Decodes `&` entities to prevent broken redirects
- Only works if headers not yet sent
- Uses output buffering to work anywhere in page processing
Example:

`php

`

`terminate(): void`
Safe exit/die with cleanup.
Cleanup Operations:
- Saves diagnostic logs to session flash data
- Ends script execution
Example:

`php

`

`status($code): void`
Sets HTTP response status code.
Supported Status Codes:

`php

`
Example:

`php

`

### Caching Control
`no_cache($client_only = true): void`
Disables caching of the current page.
Parameters:
- `$client_only` (bool, default: TRUE)

`TRUE`: Disable browser cache only
`FALSE`: Disable both browser and server cache

Headers Set:
- `Last-Modified: <current-time>` (always fresh)
- `Cache-Control: no-store`
Example:

`php

`

`cache_promisc(): void`
Marks page as publicly cacheable.
Headers Set:
- `Cache-Control: public`
Example:

`php

`

### Language Negotiation
`user_agent_language(): string`
Determines best language based on browser preferences.
Features:
- Follows RFC 9110 section 12.5.4 (HTTP Accept-Language)
- Parses `Accept-Language` header with quality factors
- Attempts exact match first, then language fallback
- Falls back to default system language
Example Header:

`
Returns:
- Language code (e.g., 'en', 'en-US', 'de')

`available_languages($subset = true): array`
Returns list of available language translations.
Parameters:
- `$subset` (bool, default: TRUE)

`TRUE`: Only allowed languages
`FALSE`: All available languages

Features:
- Scans `LANG_DIR` for language files
- Filters by `allowed_languages` config if set
- Caches result in session
- System language always included
Returns:
- Associative array: `['en' => 'en', 'de' => 'de', ...]`
Example:

`php

`

### File Serving
`sendfile($path, $filename = null, $age = null): void`
Serves files with proper HTTP headers and caching.
Parameters:
- `$path` (string) - File path (or HTTP_XXX constant for error pages)
- `$filename` (string, optional) - Custom download filename
- `$age` (int, optional) - Cache age in days
Features:
- HTTP range request support (partial file downloads)
- ETag and Last-Modified conditional requests
- Proper MIME type detection
- Content-Security-Policy for special file types
- Streaming for large files
- GZip compression for text files
Special Paths:

`php

`
Example:

`php

`

`mime_type($path): string`
Returns MIME type for a file.
Returns:
- MIME type string (e.g., 'application/pdf')
- Default: `'application/octet-stream'`
Example:

`php

`

`mime_types(): array` (Private)
Loads and caches MIME types from configuration.
Features:
- Reads from `config/mime.types`
- Caches to `cache/config/mime.types`
- Reloads if config is updated

### Compression
`gzip(): void`
Compresses HTTP response with gzip/x-gzip.
Features:
- Manually implements gzip (not relying on zlib.output_compression)
- Produces correct `Content-Length` header
- Only compresses if:

860 bytes < content < 1 MB
Client accepts compression
Headers not already sent

Example:

`php

`

### Utility Methods
`parse_str($str): array` (Private)
Parses URL-encoded strings with special character handling.
Purpose:
- Safely handles special characters in query/form data
- Converts encoding properly
Example:

`php

`

`request_uri(): string` (Private)
Extracts and normalizes REQUEST_URI from server.
Normalization:
- Removes base URL prefix
- Removes spaces
- Collapses multiple slashes
- Removes `..` path traversal attempts
- Removes leading/trailing slashes

`cut_prefix($prefix, $path): string` (Private)
Removes prefix from path (case-insensitive).

`get_header_conf($file_name): string` (Private)
Loads security header configuration from files.
Files Supported:
- `csp.conf` / `csp_custom.conf`
- `permissions_policy.conf` / `permissions_policy_custom.conf`

## Configuration Dependencies
The class relies on these database configuration settings:
| Setting | Type | Purpose |
|

`php

`
### Example 2: Handling TLS/HTTPS Upgrade

`php

`
### Example 3: Invalidating Cache After Page Edit

`php

`
### Example 4: Serving a File

`php

`

## Security Considerations
### 1. IP Address Spoofing
- Validates IPs against private ranges
- Filters proxy-provided IPs appropriately
- Configurable reverse proxy trust
### 2. Session Security
- Binds sessions to IP address
- Binds sessions to TLS status
- Supports both file and database storage
- HttpOnly cookies by default
### 3. TLS Enforcement
- Automatic HTTPS upgrade when configured
- Marks TLS sessions to prevent downgrade attacks
- HSTS header support
### 4. Content Security
- CSP headers to prevent XSS
- X-Frame-Options to prevent clickjacking
- X-Content-Type-Options to prevent MIME sniffing
- Referrer-Policy control
- Permissions-Policy for browser features
### 5. File Serving
- Validates file existence and readability
- Prevents directory traversal via `realpath()`
- Rejects symbolic links
- Special CSP for SVG and PDF files
### 6. Cache Security
- Cached only for anonymous users
- Disabled for sensitive operations (edit, watch)
- Only GET requests cached

## Performance Optimization
### 1. Page Caching
- Stores full HTML output
- TTL-based expiration
- Language and method-aware caching
- Conditional request support (304 Not Modified)
### 2. MIME Type Caching
- Loads MIME types once and caches
- Regenerates only when config changes
### 3. Session Options
- File-based sessions for simple deployments
- Database sessions for distributed systems
### 4. Compression
- Manual gzip implementation
- Proper Content-Length generation
- Only compresses appropriate sizes

## Debugging

`php

`

## Related Classes
- Session Classes (`SessionFileStore`, `SessionDbalStore`) - Session management backends
- Database Class - Configuration and cache metadata storage
- Ut Utility Class - String/path utilities
- Diag Class - Diagnostic logging

## Version History
- Supports PHP 8.0+ (uses match expressions, union types)
- Follows RFC 9110 for HTTP header handling
- Modern cookie security practices

## Conclusion
The `Http` class is the central request/response handler in WackoWiki, managing everything from session initialization to security headers to file serving. Understanding this class is essential for:
- Extending WackoWiki with custom request handlers
- Implementing custom session logic
- Adding new security policies
- Optimizing cache strategies
- Debugging HTTP-related issues

Deletions:

HTTP Class Technical Documentation

Overview

The Http class (src/class/http.php) is a core component of the WackoWiki system responsible for handling HTTP request/response processing, session management, caching, and security features. This class acts as a bridge between the web server and the wiki engine.
File Location: src/class/http.php
Dependencies: Database class, Session classes, Utility classes (Ut), Diagnostics class (Diag)

Class Properties

Public Properties

Property	Type	Description
`$tls_session`	bool	Indicates if the current session uses HTTPS/TLS encryption
`$request_uri`	string	Normalized REQUEST_URI (e.g., 'PageOfNoReturn/show?a=1')
`$ip`	string	Client's real IP address (accounts for proxies)
`$sess`	Session	Reference to the Session object
`$method`	string	Current HTTP method/request type
Private Properties
Property	Type	Description

`$db`	object	Database connection reference
`$tls_mark`	string	Cookie name for TLS session marking
`$page`	string	Current page name being processed
`$hash`	string	SHA1 hash of the page name
`$query`	string	Encoded query string
`$lang`	string	Current language code
`$file`	string	Cache file path
`$caching`	int	Flag indicating if page should be cached (0 or 1)

Constructor
php
Purpose: Initializes the Http object and sets up HTTP session handling.
Parameters:
- `$db` - Database object reference
Initialization Steps:
1. Stores database reference
2. Extracts and normalizes REQUEST_URI
3. Detects TLS/HTTPS session status
4. Determines client's real IP address
5. Sets up TLS mark cookie name
6. Enforces TLS session upgrade if needed
Example:
php

Core Methods
Session Management
`session($route): void`
Initializes the session handler (file-based or database-based).
Parameters:
- `$route` (int) - Routing flag:
- Bit 2 (`$route & 2`): Enable static mode for files/freecap (disables replay prevention and ID regeneration)
Features:
- Selects storage backend (file or database)
- Configures cookie settings (security, path, httponly)
- Binds IP and TLS validation
- Recovers diagnostic logs from previous session
Example:
php

Caching System
`check_cache($page, $method): void`
Determines if a page can be cached and prepares the cache check.
Parameters:
- `$page` (string) - Page name to cache
- `$method` (string) - Request method/action (e.g., 'show', 'edit')
Caching Rules:
- ✅ Enabled for GET requests only
- ✅ Disabled for POST requests
- ❌ Never cached for 'edit' or 'watch' methods
- ✅ Only cached for anonymous users (no logged-in users)
Example:
php

`store_cache(): void`
Saves the generated page content to cache file.
Features:
- Retrieves output buffer content
- Saves to cache file with proper permissions
- Records cache metadata in database
- Only executes if caching flag is set and user is anonymous
Example:
php

`invalidate_page($page): int`
Invalidates all cached versions of a page.
Parameters:
- `$page` (string) - Page name to invalidate
Returns:
- Number of cache entries invalidated
Process:
1. Finds all cached versions (different methods/languages)
2. Touches files to past timestamp (faster than deletion)
3. Removes entries from cache metadata table
4. Returns count of invalidated caches
Example:
php

TLS/HTTPS Security
`secure_base_url(): void`
Switches base URL from HTTP to HTTPS.
Purpose:
- Ensures all subsequent URLs use HTTPS
- Stores original HTTP URL for fallback
- Called when TLS session is detected
Example:
php

`ensure_tls($url): void`
Enforces HTTPS for a specific URL and redirects if necessary.
Parameters:
- `$url` (string) - URL to secure
Behavior:
- If not already HTTPS and TLS is enabled, forces HTTPS redirect
- Handles both relative and absolute URLs
- Converts relative URLs using current server name
Example:
php

IP Address Detection
`real_ip(): string` (Private)
Detects client's real IP address accounting for proxies.
Proxy Headers Checked (in order):
1. `HTTP_X_CLUSTER_CLIENT_IP`
2. `HTTP_X_FORWARDED_FOR` (or custom header)
3. `HTTP_CLIENT_IP`
4. `HTTP_X_REMOTE_ADDR`
5. `REMOTE_ADDR` (fallback)
Features:
- Filters out private/reserved IP ranges
- Respects configured reverse proxy addresses
- Returns `'0.0.0.0'` as fallback
Configuration in Database:
- `reverse_proxy_addresses` - Comma/space-separated proxy IPs
- `reverse_proxy_header` - Custom header name (default: `X-Forwarded-For`)
Example:
php

HTTPS Detection
`tls_session(): bool` (Private)
Detects if current connection uses HTTPS/TLS.
Checks (any being true = HTTPS):
- `$_SERVER['HTTPS']` is 'on'
- `$_SERVER['SERVER_PORT']` is 443
- `$_SERVER['HTTP_X_FORWARDED_PROTO']` is 'https'
- `$_SERVER['HTTP_X_FORWARDED_SSL']` is 'on'
- `$_SERVER['HTTP_X_FORWARDED_PORT']` is 443

Security Headers
`http_security_headers(): void`
Sets security-related HTTP headers.
Headers Set:
Header	Purpose	Config Key

Content-Security-Policy	XSS/injection protection	`csp`
Permissions-Policy	Control browser features	`permissions_policy`
Referrer-Policy	Control referrer information	`referrer_policy`
Strict-Transport-Security	Force HTTPS	Auto (TLS only)
X-Frame-Options	Clickjacking protection	Hardcoded: `SAMEORIGIN`
X-Content-Type-Options	MIME sniffing prevention	Hardcoded: `nosniff`
CSP Configuration Options:
- `0` - Disabled
- `1` - Default policy (from `csp.conf`)
- `2` - Custom policy (from `csp_custom.conf`)
Example:
php

HTTP Methods
`redirect($url, $permanent = false): void`
Performs an HTTP redirect.
Parameters:
- `$url` (string) - Target URL
- `$permanent` (bool) - Use 301 (permanent) vs 302 (temporary)
Features:
- Decodes `&` entities to prevent broken redirects
- Only works if headers not yet sent
- Uses output buffering to work anywhere in page processing
Example:
php

`terminate(): void`
Safe exit/die with cleanup.
Cleanup Operations:
- Saves diagnostic logs to session flash data
- Ends script execution
Example:
php

`status($code): void`
Sets HTTP response status code.
Supported Status Codes:
php
Example:
php

Caching Control
`no_cache($client_only = true): void`
Disables caching of the current page.
Parameters:
- `$client_only` (bool, default: TRUE)
- `TRUE`: Disable browser cache only
- `FALSE`: Disable both browser and server cache
Headers Set:
- `Last-Modified: <current-time>` (always fresh)
- `Cache-Control: no-store`
Example:
php

`cache_promisc(): void`
Marks page as publicly cacheable.
Headers Set:
- `Cache-Control: public`
Example:
php

Language Negotiation
`user_agent_language(): string`
Determines best language based on browser preferences.
Features:
- Follows RFC 9110 section 12.5.4 (HTTP Accept-Language)
- Parses `Accept-Language` header with quality factors
- Attempts exact match first, then language fallback
- Falls back to default system language
Example Header:

Returns:
- Language code (e.g., 'en', 'en-US', 'de')

`available_languages($subset = true): array`
Returns list of available language translations.
Parameters:
- `$subset` (bool, default: TRUE)
- `TRUE`: Only allowed languages
- `FALSE`: All available languages
Features:
- Scans `LANG_DIR` for language files
- Filters by `allowed_languages` config if set
- Caches result in session
- System language always included
Returns:
- Associative array: `['en' => 'en', 'de' => 'de', ...]`
Example:
php

File Serving
`sendfile($path, $filename = null, $age = null): void`
Serves files with proper HTTP headers and caching.
Parameters:
- `$path` (string) - File path (or HTTP_XXX constant for error pages)
- `$filename` (string, optional) - Custom download filename
- `$age` (int, optional) - Cache age in days
Features:
- HTTP range request support (partial file downloads)
- ETag and Last-Modified conditional requests
- Proper MIME type detection
- Content-Security-Policy for special file types
- Streaming for large files
- GZip compression for text files
Special Paths:
php
Example:
php

`mime_type($path): string`
Returns MIME type for a file.
Returns:
- MIME type string (e.g., 'application/pdf')
- Default: `'application/octet-stream'`
Example:
php

`mime_types(): array` (Private)
Loads and caches MIME types from configuration.
Features:
- Reads from `config/mime.types`
- Caches to `cache/config/mime.types`
- Reloads if config is updated

Compression
`gzip(): void`
Compresses HTTP response with gzip/x-gzip.
Features:
- Manually implements gzip (not relying on zlib.output_compression)
- Produces correct `Content-Length` header
- Only compresses if:
- 860 bytes < content < 1 MB
- Client accepts compression
- Headers not already sent
Example:
php

Utility Methods
`parse_str($str): array` (Private)
Parses URL-encoded strings with special character handling.
Purpose:
- Safely handles special characters in query/form data
- Converts encoding properly
Example:
php

`request_uri(): string` (Private)
Extracts and normalizes REQUEST_URI from server.
Normalization:
- Removes base URL prefix
- Removes spaces
- Collapses multiple slashes
- Removes `..` path traversal attempts
- Removes leading/trailing slashes

`cut_prefix($prefix, $path): string` (Private)
Removes prefix from path (case-insensitive).

`get_header_conf($file_name): string` (Private)
Loads security header configuration from files.
Files Supported:
- `csp.conf` / `csp_custom.conf`
- `permissions_policy.conf` / `permissions_policy_custom.conf`

Configuration Dependencies
The class relies on these database configuration settings:
Setting	Type	Purpose

`base_url`	string	Wiki's base URL
`tls`	bool	Enable HTTPS enforcement
`cache`	bool	Enable page caching
`cache_ttl`	int	Cache lifetime in seconds
`session_store`	int	1=File, 0=Database
`system_seed_hash`	string	Session encryption seed
`cookie_prefix`	string	Session cookie prefix
`cookie_path`	string	Cookie path
`allow_persistent_cookie`	bool	Allow persistent login
`session_length`	int	Session lifetime in seconds
`reverse_proxy_addresses`	string	Comma/space-separated proxy IPs
`reverse_proxy_header`	string	Custom X-Forwarded header
`language`	string	Default language code
`multilanguage`	bool	Enable language negotiation
`allowed_languages`	string	Comma/space-separated allowed langs
`enable_security_headers`	bool	Send security headers
`csp`	int	CSP setting (0/1/2)
`permissions_policy`	int	Permissions-Policy setting (0/1/2)
`referrer_policy`	int	Referrer-Policy setting (0-8)

Constants Used
Constant	Type	Purpose

`IN_WACKO`	bool	Security check (exit if not defined)
`CHMOD_SAFE`	int	File permissions for cache files
`CHMOD_FILE`	int	File permissions for config cache
`CACHE_PAGE_DIR`	string	Page cache directory
`CACHE_SESSION_DIR`	string	Session cache directory
`CACHE_CONFIG_DIR`	string	Config cache directory
`CONFIG_DIR`	string	Configuration directory
`LANG_DIR`	string	Language files directory
`DAYSECS`	int	Seconds in a day (86400)
`HTTP_404`	string	Path to 404 error page
`HTTP_403`	string	Path to 403 error page

Workflow Examples

Example 1: Handling a GET Request

php

Example 2: Handling TLS/HTTPS Upgrade

php

Example 3: Invalidating Cache After Page Edit

php

Example 4: Serving a File

php

Security Considerations

1. IP Address Spoofing

Validates IPs against private ranges
Filters proxy-provided IPs appropriately
Configurable reverse proxy trust

2. Session Security

Binds sessions to IP address
Binds sessions to TLS status
Supports both file and database storage
HttpOnly cookies by default

3. TLS Enforcement

Automatic HTTPS upgrade when configured
Marks TLS sessions to prevent downgrade attacks
HSTS header support

4. Content Security

CSP headers to prevent XSS
X-Frame-Options to prevent clickjacking
X-Content-Type-Options to prevent MIME sniffing
Referrer-Policy control
Permissions-Policy for browser features

5. File Serving

Validates file existence and readability
Prevents directory traversal via realpath()
Rejects symbolic links
Special CSP for SVG and PDF files

6. Cache Security

Cached only for anonymous users
Disabled for sensitive operations (edit, watch)
Only GET requests cached

Performance Optimization

1. Page Caching

Stores full HTML output
TTL-based expiration
Language and method-aware caching
Conditional request support (304 Not Modified)

2. MIME Type Caching

Loads MIME types once and caches
Regenerates only when config changes

3. Session Options

File-based sessions for simple deployments
Database sessions for distributed systems

4. Compression

Manual gzip implementation
Proper Content-Length generation
Only compresses appropriate sizes

Debugging

php

Version History

Supports PHP 8.0+ (uses match expressions, union types)
Follows RFC 9110 for HTTP header handling
Modern cookie security practices

Conclusion

The Http class is the central request/response handler in WackoWiki, managing everything from session initialization to security headers to file serving. Understanding this class is essential for:

Extending WackoWiki with custom request handlers
Implementing custom session logic
Adding new security policies
Optimizing cache strategies
Debugging HTTP-related issues

Difference between revisions for Users / Eo Ny / dev

HTTP Class Technical Documentation

Overview

Class Properties

Public Properties

Private Properties

Constructor

Core Methods

Session Management

session($route): void

Caching System

check_cache($page, $method): void

store_cache(): void

invalidate_page($page): int

TLS/HTTPS Security

secure_base_url(): void

ensure_tls($url): void

IP Address Detection

real_ip(): string (Private)

HTTPS Detection

tls_session(): bool (Private)

Security Headers

http_security_headers(): void

HTTP Methods

redirect($url, $permanent = false): void

terminate(): void

status($code): void

Caching Control

no_cache($client_only = true): void

cache_promisc(): void

Language Negotiation

user_agent_language(): string

available_languages($subset = true): array

File Serving

sendfile($path, $filename = null, $age = null): void

mime_type($path): string

mime_types(): array (Private)

Compression

gzip(): void

Utility Methods

parse_str($str): array (Private)

request_uri(): string (Private)

cut_prefix($prefix, $path): string (Private)

get_header_conf($file_name): string (Private)

Configuration Dependencies

Constants Used

Workflow Examples

Example 1: Handling a GET Request

Example 2: Handling TLS/HTTPS Upgrade

Example 3: Invalidating Cache After Page Edit

Example 4: Serving a File

Security Considerations

1. IP Address Spoofing

2. Session Security

3. TLS Enforcement

4. Content Security

5. File Serving

6. Cache Security

Performance Optimization

1. Page Caching

2. MIME Type Caching

3. Session Options

4. Compression

Debugging

Related Classes

Version History

Conclusion

`session($route): void`

`check_cache($page, $method): void`

`store_cache(): void`

`invalidate_page($page): int`

`secure_base_url(): void`

`ensure_tls($url): void`

`real_ip(): string` (Private)

`tls_session(): bool` (Private)

`http_security_headers(): void`

`redirect($url, $permanent = false): void`

`terminate(): void`

`status($code): void`

`no_cache($client_only = true): void`

`cache_promisc(): void`

`user_agent_language(): string`

`available_languages($subset = true): array`

`sendfile($path, $filename = null, $age = null): void`

`mime_type($path): string`

`mime_types(): array` (Private)

`gzip(): void`

`parse_str($str): array` (Private)

`request_uri(): string` (Private)

`cut_prefix($prefix, $path): string` (Private)

`get_header_conf($file_name): string` (Private)