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[lwip-users] Implementing Ftp File Transfert : Non blocking Send ?
From: |
Paul THILLOY |
Subject: |
[lwip-users] Implementing Ftp File Transfert : Non blocking Send ? |
Date: |
Wed, 31 Dec 2008 15:21:59 +0100 |
Hello to all,
I'm a beginner in lwip programmation....and I need some help....I hope I'm not asking something stupid...
I'm currently trying to implement a file exchange
between a computer using Filezilla Server or whatever Ftp on the web
and another device which is using Lwip.
I
can connect, open a data connection, start the transfert, but if the
connection to the server is lost...then I cannot escape from the write
or send function...
This transfert part roughtly consists in :
(I erased the error checking steps)
the data socket is obtained through :
{
struct sockaddr local;
struct sockaddr_in *sa4;
SockDataConnection = socket( ctrl_sock->sa_family, SOCK_STREAM, 0);
memcpy(&local,ctrl_sock,sizeof(struct sockaddr));
sa4 = (struct sockaddr_in *) &local;
sa4->sin_port = 0;
bind(SockDataConnection,&local,local.sa_len);
listen(SockDataConnection, 1);
socklen_t addrlen = 0;
nDataSock = accept(SockDataConnection, NULL, &addrlen);
do
{
readFile(fSrcFile,BufferSrc,&nNbRead);
nNbWritten = write(nDataSock, BufferSrc, nNbRead);
// nNbWritten = send(nDataSock, BufferSrc, nNbRead,MSG_DONTWAIT);
}
while ((nCompt < FileLength) && (!ErrNo));
}
if
the transfert is interrupted by some disconnection...then it is
impossible to leave the send or write function...Am I doing something
wrong ?
Thanks a lot for any help !
Best regards
Paul
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