How can I get the IP address of the WebSocket client by crow::websocket::connection?

[Jasonzyt]

I want to print the IP address of the WebSocket client when it connects or disconnects to my server

[The-EDev]

You can use onaccept (more info here), which provides the crow::request (ref) that was sent to establish the connection.

As for disconnecting, you'll need to keep a map of the connections and their related IP addresses.

[Jasonzyt]

But i can't get crow::websocket::connection and make the IP and connection a pair

[The-EDev]

you can store the connection from onopen in a temporary variable or stack until onaccept is called.

Another thing you can do is modify crow::websocket::connection to give you the IP address like so:

@@ -26,6 +26,7 @@ namespace crow
             virtual void send_ping(const std::string& msg) = 0;
             virtual void send_pong(const std::string& msg) = 0;
             virtual void close(const std::string& msg = "quit") = 0;
+            virtual std::string get_remote_ip() = 0;
             virtual ~connection(){}
 
             void userdata(void* u) { userdata_ = u; }
@@ -185,6 +186,11 @@ namespace crow
                     });
                 }
 
+                std::string get_remote_ip() override
+                {
+                    return adaptor_.remote_endpoint().address().to_string();
+                }
+
             protected:
 
                 /// Generate the websocket headers using an opcode and the message size (in bytes).

[Jasonzyt]

Thanks very much!!!

[The-EDev]

No problem, thanks for making the suggestion :)