AMETEK Powervar / WebSocketClient

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of WebSocketClient by Samuel Mokrani

Embed: (wiki syntax)

« Back to documentation index

Websocket Class Reference
Public Member Functions

Websocket Class Reference

Websocket client Class. More...

#include <Websocket.h>

Public Member Functions

 Websocket (NetworkStack *ns, char *url)
 Constructor.
bool connect ()
 Connect to the websocket url.
int send (char *str)
 Send a string according to the websocket format (see rfc 6455)
bool read (char *message)
 Read a websocket message.
bool is_connected ()
 To see if there is a websocket connection active.
bool close ()
 Close the websocket connection.

Detailed Description

Websocket client Class.

Example (ethernet network): 

 #include "mbed.h"
 #include "EthernetInterface.h"
 #include "Websocket.h"

 int main() {
    EthernetInterface eth;
    eth.init(); //Use DHCP
    eth.connect();
    printf("IP Address is %s\n\r", eth.getIPAddress());
   
    Websocket ws("ws://sockets.mbed.org:443/ws/demo/rw");
    ws.connect();
   
    while (1) {
        int res = ws.send("WebSocket Hello World!");

        if (ws.read(recv)) {
            printf("rcv: %s\r\n", recv);
        }

        wait(0.1);
    }
 }

Definition at line 66 of file Websocket.h.

Constructor & Destructor Documentation

Websocket ( NetworkStack *  ns,
char *  url 
)

Constructor.

Parameters:
urlThe Websocket url in the form "ws://ip_domain[:port]/path" (by default: port = 80)

Definition at line 20 of file Websocket.cpp.

Member Function Documentation

bool close (  )

Close the websocket connection.

Returns:
true if the connection has been closed, false otherwise

Definition at line 320 of file Websocket.cpp.

bool connect (  )

Connect to the websocket url.

Returns:
true if the connection is established, false otherwise

Definition at line 121 of file Websocket.cpp.

bool is_connected (  )

To see if there is a websocket connection active.

Returns:
true if there is a connection active

Definition at line 332 of file Websocket.cpp.

bool read ( char *  message )

Read a websocket message.

Parameters:
messagepointer to the string to be read (null if drop frame)
Returns:
true if a websocket frame has been read

Definition at line 241 of file Websocket.cpp.

int send ( char *  str )

Send a string according to the websocket format (see rfc 6455)

Parameters:
strstring to be sent
Returns:
the number of bytes sent

Definition at line 229 of file Websocket.cpp.

Generated on Sun Jul 17 2022 09:02:19 by  doxygen 1.7.2