Rolf Springer

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12 years, 10 months ago.

Wifly TCPSocketServer problems - Help - please !

The code below is modified from the Echo Server example. The Wifly connects fine but I cannot get the TCPSocketServer to work. If I try to Telnet to port 2000, I can get the command interface, but there is no response from port 12345. Also, when connecting with Telnet on port 2000, the code below gets executed ("Connecting from..."). What am I missing here ? I need a Socket Server on port 12345, not a client. Please help. 

#include "mbed.h"
#include "WiflyInterface.h"

Serial pc(USBTX, USBRX);
WiflyInterface wifly(p28, p27, p26, p25, "SSID", "password", WPA);  // m3pi

int main (void) {
    wifly.init(); // use DHCP
    while (!wifly.connect()); // join the network
    
    TCPSocketServer server;
    server.bind(12345);
    server.listen(1);
    
    while (true) {
        printf("\nWait for new connection...\r\n");
        TCPSocketConnection client;
        server.accept(client);
        client.set_blocking(false, 10000); 
        printf("Connection from: %s\n\r", client.get_address());
        char buffer[256];
        while (true) {
            int n = client.receive(buffer, sizeof(buffer));
            if (n <= 0) break;

            client.send_all(buffer, n);
            if (n <= 0) break;
        }
        client.close();
    }
}

Question relating to:

Last updated: 12 Jul 2017
WiFly, WiflyInterface

1 Answer

Samuel Mokrani
12 years, 10 months ago.

Hi Rolf,

It appears that on some wifly modules, the module has to be rebooted to change the local port (on which the module is listening). I updated the wiflyinterface library. You can even find a program example at the end of the WiflyInterface webpage using TCPSocketServer.

Cheers, Sam

Accepted Answer

Hi Sam; Thanks for the quick reply. I actually updated the wiflyinterface lib this morning - wondering why I missed that yesterday... unfortunately my Wifly now does not connect any more (no other changes). Will go back to Wifly_configure and check....and let you know. Thanks, Rolf

posted by Rolf Springer 20 Dec 2012

Hi Sam; All good now (had a DHCP problem). Thanks again Rolf

posted by Rolf Springer 20 Dec 2012