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

[Aris Adamantiadis <aris@xxxxxxxxxxxx>]

Hi Andreas,

I think Kevin complained that sftp_read returned an EOF condition when
the file was not fully read, and if it does it's a bug in libssh.

Aris

Le 23/10/13 09:53, Andreas Schneider a écrit :
> 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
>