Hi, Tony.
I have just pushed the 'rework-stream-interface' branch to the gitlab
repository.
I have reworked the internal interpreter stream interface, so that
incomplete reads are retried automatically until all the data is read or
an error occurs, whatever the underlying stream.
Can you try it and tell me if it fixes the incomplete read on TCP sockets?
Regards,
Le 24/09/2017 à 04:07, Tony Morehen a écrit :
I came across an interesting issue when working on Imap's Fetch
command. Fetch is used to down load messages. The response to a Fetch
has 4 parts:
1) a single line providing the size of the download, say, 69000 bytes.
2) the mime-encoded download (a string 69000 bytes long)
3) one line whose only contents is ")"
4) one line status line.
So my code does:
Readline
response = Read #stream, iSize 'iSize=69000
Readline
Readline
Using a TCP socket, the Read # line has no error but the download is
incomplete, say only 50000 bytes. The remaining 19000 byes is read by
the next Readline. However, the response variable is the correct 69000
bytes in length, with the last 19000 bytes zero-filled. Its like the
Read # timed out but the timeout is set to 10000 and 10 seconds had not
elapsed. Socket.blocking was set to True.
Using an openssl process, the Read # line raises an error: Error 9, Bad
file descriptor.
I have a workaround: Read # is replaced with
Dim result as new String[]
Bytesread=0
Do While BytesRead < iSize
Response = Read #$hStream, IIf(iSize - BytesRead > 4096, 4096,
iSize - BytesRead)
result.Add(Response)
bytesread += 4096
Loop
Response = result.Join("")
Now both TCP and openssl work, no zero-fill no errors.
Any ideas? Other fixes?
--
Benoît Minisini
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