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Re: [lwip-users] Can't connect through netconn API


From: Fabian Koch
Subject: Re: [lwip-users] Can't connect through netconn API
Date: Tue, 22 Jul 2014 13:41:39 +0000

Hey,

how is your &server declared and defined?

Kind regards,
Fabian

-----Original Message-----
From: address@hidden [mailto:address@hidden On Behalf Of ALP-Schoof
Sent: Dienstag, 22. Juli 2014 09:54
To: address@hidden
Subject: [lwip-users] Can't connect through netconn API

Hello,

I'm using Netconn API (LWIP 1.4.1) and FreeRTOS to implement an FTP server.
When I want to make a listening connection
  struct netconn *ftp_listener = netconn_new(NETCONN_TCP);
  netconn_bind(ftp_listener, IPADDR_ANY, 21);
  netconn_listen(ftp_listener);
  netconn_accept(ftp_listener, &commandConnection); everything will work fine, 
I can create a connection and send/receive data through
  netconn_write(conn, data, length, NETCONN_COPY);
  netconn_recv(conn, &rcvBuff);

However when I want to connect to a server, I get an error. 

  struct netconn* nc = netconn_new(NETCONN_TCP);
  err_t err = netconn_connect(nc, &server, serverPort);
>>>>>>> err is -10 (ERR_ABRT) at this point
  for(; ; )
  {
    netconn_write(nc, "test", 5 , NETCONN_COPY);
    vTaskDelay(1000);
  }
I've checked all communications with Wireshark, but it appears LWIP doesn't 
send any connection requests.

Cheers!



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