drogon/examples/simple_reverse_proxy/config.json

/* This is a JSON format configuration file
 */
{
    /*
    //ssl: The global ssl files setting
    "ssl": {
        "cert": "../../trantor/trantor/tests/server.crt",
        "key": "../../trantor/trantor/tests/server.key"
    },*/
    "listeners": [{
        //address: Ip address,0.0.0.0 by default
        "address": "0.0.0.0",
        //port: Port number
        "port": 8088,
        //https: If true, use https for security, false by default
        "https": false
    }],
    "app": {
        //threads_num: The number of IO threads, 1 by default, if the value is set to 0, the number of threads
        //is the number of CPU cores
        "threads_num": 2,
        //enable_session: False by default
        "enable_session": false,
        "session_timeout": 0,
        //session_cookie_key: The cookie key of the session, "JSESSIONID" by default
        "session_cookie_key": "JSESSIONID",
        //session_max_age: The max age of the session cookie, -1 by default
        "session_max_age": -1,
        //document_root: Root path of HTTP document, default path is ./
        "document_root": "./",
        //home_page: Set the HTML file of the home page, the default value is "index.html"
        //If there isn't any handler registered to the path "/", the home page file in the "document_root" is send to clients as a response
        //to the request for "/".
        "home_page": "index.html",
        //static_file_headers: Headers for static files
        /*"static_file_headers": [
          {
                "name": "field-name",
                "value": "field-value"
          }
        ],*/
        //upload_path: The path to save the uploaded file. "uploads" by default. 
        //If the path isn't prefixed with /, ./ or ../,
        //it is relative path of document_root path
        "upload_path": "uploads",
        /* file_types:
         * HTTP download file types, the file types supported by drogon
         * by default are "html", "js", "css", "xml", "xsl", "txt", "svg",
         * "ttf", "otf", "woff2", "woff" , "eot", "png", "jpg", "jpeg",
         * "gif", "bmp", "ico", "icns", etc. */
        "file_types": [
            "gif",
            "png",
            "jpg",
            "js",
            "css",
            "html",
            "ico",
            "swf",
            "xap",
            "apk",
            "cur",
            "xml"
        ],
        //max_connections: maximum connections number, 100000 by default
        "max_connections": 100000,
        //max_connections_per_ip: maximum connections number per client,0 by default which means no limit
        "max_connections_per_ip": 0,
        //Load_dynamic_views: False by default, when set to true, drogon
        //compiles and loads dynamically "CSP View Files" in directories defined
        //by "dynamic_views_path"
        "load_dynamic_views": false,
        //dynamic_views_path: If the path isn't prefixed with /, ./ or ../,
        //it is relative path of document_root path
        "dynamic_views_path": [
            "./views"
        ],
        //log: Set log output, drogon output logs to stdout by default
        "log": {
            //log_path: Log file path,empty by default,in which case,logs are output to the stdout
            //"log_path": "./",
            //logfile_base_name: Log file base name,empty by default which means drogon names logfile as
            //drogon.log ...
            "logfile_base_name": "",
            //log_size_limit: 100000000 bytes by default,
            //When the log file size reaches "log_size_limit", the log file is switched.
            "log_size_limit": 100000000,
            //log_level: "DEBUG" by default,options:"TRACE","DEBUG","INFO","WARN"
            //The TRACE level is only valid when built in DEBUG mode.
            "log_level": "DEBUG"
        },
        //run_as_daemon: False by default
        "run_as_daemon": false,
        //handle_sig_term: True by default
        "handle_sig_term": true,
        //relaunch_on_error: False by default, if true, the program will be restart by the parent after exiting;
        "relaunch_on_error": false,
        //use_sendfile: True by default, if true, the program 
        //uses sendfile() system-call to send static files to clients;
        "use_sendfile": true,
        //use_gzip: True by default, use gzip to compress the response body's content;
        "use_gzip": true,
        //static_files_cache_time: 5 (seconds) by default, the time in which the static file response is cached,
        //0 means cache forever, the negative value means no cache
        "static_files_cache_time": 5,
        //idle_connection_timeout: Defaults to 60 seconds, the lifetime 
        //of the connection without read or write
        "idle_connection_timeout": 60,
        //server_header_field: Set the 'Server' header field in each response sent by drogon,
        //empty string by default with which the 'Server' header field is set to "Server: drogon/version string\r\n"
        "server_header_field": "",
        //enable_server_header: Set true to force drogon to add a 'Server' header to each HTTP response. The default 
        //value is true.
        "enable_server_header": false,
        //enable_date_header: Set true to force drogon to add a 'Date' header to each HTTP response. The default 
        //value is true.
        "enable_date_header": false,
        //keepalive_requests: Set the maximum number of requests that can be served through one keep-alive connection. 
        //After the maximum number of requests are made, the connection is closed.
        //The default value of 0 means no limit.
        "keepalive_requests": 0,
        //pipelining_requests: Set the maximum number of unhandled requests that can be cached in pipelining buffer. 
        //After the maximum number of requests are made, the connection is closed.
        //The default value of 0 means no limit.
        "pipelining_requests": 0,
        //gzip_static: If it is set to true, when the client requests a static file, drogon first finds the compressed 
        //file with the extension ".gz" in the same path and send the compressed file to the client.
        //The default value of gzip_static is true.
        "gzip_static": true,
        //client_max_body_size: Set the maximum body size of HTTP requests received by drogon. The default value is "1M".
        //One can set it to "1024", "1k", "10M", "1G", etc. Setting it to "" means no limit.
        "client_max_body_size": "1M",
        //max_memory_body_size: Set the maximum body size in memory of HTTP requests received by drogon. The default value is "64K" bytes.
        //If the body size of a HTTP request exceeds this limit, the body is stored to a temporary file for processing.
        //Setting it to "" means no limit.
        "client_max_memory_body_size": "64K",
        //client_max_websocket_message_size: Set the maximum size of messages sent by WebSocket client. The default value is "128K".
        //One can set it to "1024", "1k", "10M", "1G", etc. Setting it to "" means no limit.
        "client_max_websocket_message_size": "128K"
    },
    //plugins: Define all plugins running in the application
    "plugins": [{
        //name: The class name of the plugin
        "name": "my_plugin::SimpleReverseProxy",
        //dependencies: Plugins that the plugin depends on. It can be commented out
        "dependencies": [],
        //config: The configuration of the plugin. This json object is the parameter to initialize the plugin.
        //It can be commented out
        "config": {
            // The pipelining depth of HTTP clients.
            "pipelining": 16,
            "backends": ["http://127.0.0.1:8848"],
            "same_client_to_same_backend": false,
            //The number of connections created by proxy for each backend in very event loop (IO thread).
            "connection_factor": 1
        }
    }],
    //custom_config: custom configuration for users. This object can be get by the app().getCustomConfig() method. 
    "custom_config": {}
}