Merge branch 'master' into #421-Websockets-should-support-a-maximum-payload

docs/guides/routes.md

@@ -27,6 +27,52 @@ You can change the HTTP methods the route uses from just the default `GET` by us
 
     Crow handles `HEAD` and `OPTIONS` methods automatically. So adding those to your handler has no effect.
 
+Crow defines the following methods:
+```
+DELETE
+GET
+HEAD
+POST
+PUT
+
+CONNECT
+OPTIONS
+TRACE
+
+PATCH
+PURGE
+
+COPY
+LOCK
+MKCOL
+MOVE
+PROPFIND
+PROPPATCH
+SEARCH
+UNLOCK
+BIND
+REBIND
+UNBIND
+ACL
+
+REPORT
+MKACTIVITY
+CHECKOUT
+MERGE
+
+SEARCH
+NOTIFY
+SUBSCRIBE
+UNSUBSCRIBE
+
+MKCALENDAR
+
+LINK
+UNLINK
+
+SOURCE
+```
+
 ## Handler
 Basically a piece of code that gets executed whenever the client calls the associated route, usually in the form of a [lambda expression](https://en.cppreference.com/w/cpp/language/lambda). It can be as simple as `#!cpp ([](){return "Hello World"})`.<br><br>
 
@@ -46,6 +92,56 @@ Alternatively, you can define the response in the body and return it (`#!cpp ([]
 
 For more information on `crow::response` go [here](../../reference/structcrow_1_1response.html).<br><br>
     
+Crow defines the following status codes:
+```
+100 Continue
+101 Switching Protocols
+
+200 OK
+201 Created
+202 Accepted
+203 Non-Authoritative Information
+204 No Content
+205 Reset Content
+206 Partial Content
+
+300 Multiple Choices
+301 Moved Permanently
+302 Found
+303 See Other
+304 Not Modified
+307 Temporary Redirect
+308 Permanent Redirect
+
+400 Bad Request
+401 Unauthorized
+403 Forbidden
+404 Not Found
+405 Method Not Allowed
+407 Proxy Authentication Required
+409 Conflict
+410 Gone
+413 Payload Too Large
+415 Unsupported Media Type
+416 Range Not Satisfiable
+417 Expectation Failed
+428 Precondition Required
+429 Too Many Requests
+451 Unavailable For Legal Reasons
+
+500 Internal Server Error
+501 Not Implemented
+502 Bad Gateway
+503 Service Unavailable
+504 Gateway Timeout
+506 Variant Also Negotiates
+```
+
+!!! note
+
+    If your status code is not defined in the list above (e.g. `crow::response(123)`) Crow will return `500 Internal Server Error` instead.
+
+
 ### Return statement
 A `crow::response` is very strictly tied to a route. If you can have something in a response constructor, you can return it in a handler.<br><br>
 The main return type is `std::string`, although you could also return a `crow::json::wvalue` or `crow::multipart::message` directly.<br><br>

examples/websocket/templates/ws.html

@@ -19,8 +19,8 @@ sock.onopen = ()=>{
 sock.onerror = (e)=>{
     console.log('error',e)
 }
-sock.onclose = ()=>{
+sock.onclose = (e)=>{
-    console.log('close')
+    console.log('close', e)
 }
 sock.onmessage = (e)=>{
     $("#log").val(

include/crow/app.h

@@ -59,6 +59,9 @@ namespace crow
         Crow()
         {}
 
+
+        std::atomic<int> websocket_count{0};
+
         /// Process an Upgrade request
 
         ///
@@ -128,6 +131,11 @@ namespace crow
             return *this;
         }
 
+        std::vector<int> signals()
+        {
+            return signals_;
+        }
+
         /// Set the port that Crow will handle requests on
         self_t& port(std::uint16_t port)
         {
@@ -313,7 +321,6 @@ namespace crow
             {
                 server_ = std::move(std::unique_ptr<server_t>(new server_t(this, bindaddr_, port_, server_name_, &middlewares_, concurrency_, timeout_, nullptr)));
                 server_->set_tick_function(tick_interval_, tick_function_);
-                server_->signal_clear();
                 for (auto snum : signals_)
                 {
                     server_->signal_add(snum);

include/crow/http_connection.h

@@ -317,11 +317,15 @@ namespace crow
             buffers_.reserve(4 * (res.headers.size() + 5) + 3);
 
             if (!statusCodes.count(res.code))
-                res.code = 500;
             {
+                CROW_LOG_WARNING << this << " status code "
+                                 << "(" << res.code << ")"
+                                 << " not defined, returning 500 instead";
+                res.code = 500;
+            }
+
             auto& status = statusCodes.find(res.code)->second;
             buffers_.emplace_back(status.data(), status.size());
-            }
 
             if (res.code >= 400 && res.body.empty())
                 res.body = statusCodes[res.code].substr(9);

include/crow/http_server.h

@@ -161,9 +161,21 @@ namespace crow
 
         void stop()
         {
-            io_service_.stop();
+            shutting_down_ = true;                                                 //Prevent the acceptor from taking new connections
+            while (handler_->websocket_count.load(std::memory_order_release) != 0) //Wait for the websockets to close properly
+            {
+            }
             for (auto& io_service : io_service_pool_)
-                io_service->stop();
+            {
+                if (io_service != nullptr)
+                {
+                    CROW_LOG_INFO << "Closing IO service " << &io_service;
+                    io_service->stop(); //Close all io_services (and HTTP connections)
+                }
+            }
+
+            CROW_LOG_INFO << "Closing main IO service (" << &io_service_ << ')';
+            io_service_.stop(); //Close main io_service
         }
 
         void signal_clear()
@@ -194,6 +206,8 @@ namespace crow
         }
 
         void do_accept()
+        {
+            if (!shutting_down_)
             {
                 uint16_t service_idx = pick_io_service_idx();
                 asio::io_service& is = *io_service_pool_[service_idx];
@@ -223,6 +237,7 @@ namespace crow
                       do_accept();
                   });
             }
+        }
 
     private:
         asio::io_service io_service_;
@@ -230,6 +245,7 @@ namespace crow
         std::vector<detail::task_timer*> task_timer_pool_;
         std::vector<std::function<std::string()>> get_cached_date_str_pool_;
         tcp::acceptor acceptor_;
+        bool shutting_down_ = false;
         boost::asio::signal_set signals_;
         boost::asio::deadline_timer tick_timer_;
 

include/crow/websocket.h

@@ -1,6 +1,7 @@
 #pragma once
 #include <boost/algorithm/string/predicate.hpp>
 #include <boost/array.hpp>
+#include "crow/logging.h"
 #include "crow/socket_adaptors.h"
 #include "crow/http_request.h"
 #include "crow/TinySHA1.hpp"
@@ -60,6 +61,7 @@ namespace crow
         //
 
         /// A websocket connection.
+
         template<typename Adaptor, typename Handler>
         class Connection : public connection
         {
@@ -78,11 +80,13 @@ namespace crow
               adaptor_(std::move(adaptor)),
               handler_(handler),
               max_payload_bytes_(max_payload),
+              websocket_count_(handler_->websocket_count),
               open_handler_(std::move(open_handler)),
               message_handler_(std::move(message_handler)),
               close_handler_(std::move(close_handler)),
               error_handler_(std::move(error_handler)),
-              accept_handler_(std::move(accept_handler))
+              accept_handler_(std::move(accept_handler)),
+              signals_(adaptor_.get_io_service())
             {
                 if (!boost::iequals(req.get_header_value("upgrade"), "websocket"))
                 {
@@ -101,6 +105,11 @@ namespace crow
                     }
                 }
 
+
+                signals_.clear();
+                for (auto snum : handler_->signals())
+                    signals_.add(snum);
+
                 // Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
                 // Sec-WebSocket-Version: 13
                 std::string magic = req.get_header_value("Sec-WebSocket-Key") + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
@@ -108,6 +117,15 @@ namespace crow
                 s.processBytes(magic.data(), magic.size());
                 uint8_t digest[20];
                 s.getDigestBytes(digest);
+
+                signals_.async_wait(
+                  [&](const boost::system::error_code& e, int /*signal_number*/) {
+                      if (!e)
+                      {
+                          CROW_LOG_INFO << "Quitting Websocket: " << this;
+                          close("Server Application Terminated");
+                      }
+                  });
                 start(crow::utility::base64encode((unsigned char*)digest, 20));
             }
 
@@ -296,6 +314,7 @@ namespace crow
                                       has_mask_ = false;
 #else
                                       close_connection_ = true;
+                                      adaptor_.shutdown_readwrite();
                                       adaptor_.close();
                                       if (error_handler_)
                                           error_handler_(*this);
@@ -321,6 +340,7 @@ namespace crow
                               else
                               {
                                   close_connection_ = true;
+                                  adaptor_.shutdown_readwrite();
                                   adaptor_.close();
                                   if (error_handler_)
                                       error_handler_(*this);
@@ -358,6 +378,7 @@ namespace crow
                               else
                               {
                                   close_connection_ = true;
+                                  adaptor_.shutdown_readwrite();
                                   adaptor_.close();
                                   if (error_handler_)
                                       error_handler_(*this);
@@ -392,6 +413,7 @@ namespace crow
                               else
                               {
                                   close_connection_ = true;
+                                  adaptor_.shutdown_readwrite();
                                   adaptor_.close();
                                   if (error_handler_)
                                       error_handler_(*this);
@@ -436,6 +458,7 @@ namespace crow
                                       close_connection_ = true;
                                       if (error_handler_)
                                           error_handler_(*this);
+                                      adaptor_.shutdown_readwrite();
                                       adaptor_.close();
                                   }
                               });
@@ -474,6 +497,7 @@ namespace crow
                                   close_connection_ = true;
                                   if (error_handler_)
                                       error_handler_(*this);
+                                  adaptor_.shutdown_readwrite();
                                   adaptor_.close();
                               }
                           });
@@ -553,6 +577,7 @@ namespace crow
                         }
                         else
                         {
+                            adaptor_.shutdown_readwrite();
                             adaptor_.close();
                             close_connection_ = true;
                             if (!is_close_handler_called_)
@@ -622,6 +647,7 @@ namespace crow
                 if (!is_close_handler_called_)
                     if (close_handler_)
                         close_handler_(*this, "uncleanly");
+                websocket_count_--;
                 if (sending_buffers_.empty() && !is_reading)
                     delete this;
             }
@@ -651,12 +677,14 @@ namespace crow
             bool error_occured_{false};
             bool pong_received_{false};
             bool is_close_handler_called_{false};
+            std::atomic<int>& websocket_count_;
 
             std::function<void(crow::websocket::connection&)> open_handler_;
             std::function<void(crow::websocket::connection&, const std::string&, bool)> message_handler_;
             std::function<void(crow::websocket::connection&, const std::string&)> close_handler_;
             std::function<void(crow::websocket::connection&)> error_handler_;
             std::function<bool(const crow::request&)> accept_handler_;
+            boost::asio::signal_set signals_;
         };
     } // namespace websocket
 } // namespace crow

tests/unittest.cpp

@@ -571,6 +571,61 @@ TEST_CASE("multi_server")
     app2.stop();
 } // multi_server
 
+
+TEST_CASE("undefined_status_code")
+{
+    SimpleApp app;
+    CROW_ROUTE(app, "/get123")
+    ([] {
+        //this status does not exists statusCodes map defined in include/crow/http_connection.h
+        const int undefinedStatusCode = 123;
+        return response(undefinedStatusCode, "this should return 500");
+    });
+
+    CROW_ROUTE(app, "/get200")
+    ([] {
+        return response(200, "ok");
+    });
+
+    auto _ = app.bindaddr(LOCALHOST_ADDRESS).port(45471).run_async();
+    app.wait_for_server_start();
+
+    asio::io_service is;
+    auto sendRequestAndGetStatusCode = [&](const std::string& route) -> unsigned {
+        asio::ip::tcp::socket socket(is);
+        socket.connect(asio::ip::tcp::endpoint(asio::ip::address::from_string(LOCALHOST_ADDRESS), app.port()));
+
+        boost::asio::streambuf request;
+        std::ostream request_stream(&request);
+        request_stream << "GET " << route << " HTTP/1.0\r\n";
+        request_stream << "Host: " << LOCALHOST_ADDRESS << "\r\n";
+        request_stream << "Accept: */*\r\n";
+        request_stream << "Connection: close\r\n\r\n";
+
+        // Send the request.
+        boost::asio::write(socket, request);
+
+        boost::asio::streambuf response;
+        boost::asio::read_until(socket, response, "\r\n");
+
+        std::istream response_stream(&response);
+        std::string http_version;
+        response_stream >> http_version;
+        unsigned status_code = 0;
+        response_stream >> status_code;
+
+        return status_code;
+    };
+
+    unsigned statusCode = sendRequestAndGetStatusCode("/get200");
+    CHECK(statusCode == 200);
+
+    statusCode = sendRequestAndGetStatusCode("/get123");
+    CHECK(statusCode == 500);
+
+    app.stop();
+} // undefined_status_code
+
 TEST_CASE("json_read")
 {
     {
@@ -2025,7 +2080,13 @@ TEST_CASE("send_file")
         app.handle(req, res);
 
         CHECK(200 == res.code);
+
+        CHECK(res.headers.count("Content-Type"));
+        if (res.headers.count("Content-Type"))
             CHECK("image/jpeg" == res.headers.find("Content-Type")->second);
+
+        CHECK(res.headers.count("Content-Length"));
+        if (res.headers.count("Content-Length"))
             CHECK(to_string(statbuf_cat.st_size) == res.headers.find("Content-Length")->second);
     }
 
@@ -2039,7 +2100,12 @@ TEST_CASE("send_file")
 
         CHECK_NOTHROW(app.handle(req, res));
         CHECK(200 == res.code);
+        CHECK(res.headers.count("Content-Type"));
+        if (res.headers.count("Content-Type"))
             CHECK("text/plain" == res.headers.find("Content-Type")->second);
+
+        CHECK(res.headers.count("Content-Length"));
+        if (res.headers.count("Content-Length"))
             CHECK(to_string(statbuf_badext.st_size) == res.headers.find("Content-Length")->second);
     }
 } // send_file