Re: sftp_read receives EOF on second call for a 24kb file

[Andreas Schneider <asn@xxxxxxxxxxxxxx>]

On Tuesday 22 October 2013 18:58:17 Darren wrote:
>  Hi Kevin,
> 
> Assuming remote to local transfer:
> 
> You read the first chunk of data, and use sftp_seek to move the file pointer
> 

There is absolutely no need to call sftp_seek() you only need it if you resume 
a transfer. The API works the same way as the POSIX API. Files should be 
transferred in small chunks.

#define MAX_XFER_BUF_SIZE 16384

char buf[MAX_XFER_BUF_SIZE];

file = sftp_open(sftp, path, O_RDONLY, 0);

for (;;) {
	bytesread = sftp_read(file, buf, MAX_XFER_BUF_SIZE);
	if (bytesread == 0) {
		break; /* EOF */
	} else if (bytesread < 0) {
		/* ERROR HANDLING */
	}

	byteswritten = write(fd, buf, MAX_XFER_BUF_SIZE)
	if (byteswritten != bytesread) {
		/* ERROR */
	}
}

This way I can transfer files which are several gigabyte of size.


	-- andreas

-- 
Andreas Schneider                   GPG-ID: CC014E3D
www.cryptomilk.org                asn@xxxxxxxxxxxxxx