[phpxmlrpc] XMLRPC Binary Transfer

[Frank H]

Hi all,

I am trying to create a function that allows me to send binary files from a client and have the server write it into a directory.
I have it working right now, but it errors when I try to send a file greater then about 300 Kb. Any file under that size will
transfer just fine.



Here is the function I have on the server...

function upload_file2($m)
{
$param1 = $m->getParam(0);
$write_file = $param1->scalarval();
$convert_file = fopen($write_file, "rb");

$param2 = $m->getParam(1);
$file_name = $param2->scalarval();

$test_write = fopen("/tmp/".$file_name, "w");
fwrite($test_write, $write_file);
fclose($test_write);

return new xmlrpcresp(new xmlrpcval($file_name));
}

$upload_file2_sig = array(array($xmlrpcBase64,$xmlrpcBase64, $xmlrpcString));
$upload_file2_doc = 'uploads a binary file';



I am using a Python client to send the file. I was playing around with a Python server to transfer files and the Python
server does not run into any problems with file size.

This is what I have on the python client...

import xmlrpclib

print("Trying to connect...")
server_url = 'http://some_url/new_server.php';
server = xmlrpclib.Server(server_url);

handle = open("nova.bmp")
file_name = "fetch_nova.bmp"
send_file = server.sendFile(xmlrpclib.Binary(handle.read()), file_name)


This is the error I get when trying to use the Python Client/Php Server combo

Trying to connect...
Traceback (most recent call last):
File "testProc_client.py", line 20, in ?
send_file = server.sendFile(xmlrpclib.Binary(handle.read()), file_name)
File "/usr/lib/python2.3/xmlrpclib.py", line 1029, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.3/xmlrpclib.py", line 1316, in __request
verbose=self.__verbose
File "/usr/lib/python2.3/xmlrpclib.py", line 1070, in request
headers
xmlrpclib.ProtocolError: <ProtocolError for mmodev.jpl.nasa.gov/frank/xmlrpc/demo/server/new_server.php: -1 >


Any help would be greatly appreciated.
Thanks!

-Frank


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[Gaetano Giunta]

Post by Frank H
Hi all,
I am trying to create a function that allows me to send binary files
from a client and have the server write it into a directory.
I have it working right now, but it errors when I try to send a file
greater then about 300 Kb. Any file under that size will
transfer just fine.
Here is the function I have on the server...
function upload_file2($m)
{
$param1 = $m->getParam(0);
$write_file = $param1->scalarval();
$convert_file = fopen($write_file, "rb");
$param2 = $m->getParam(1);
$file_name = $param2->scalarval();
$test_write = fopen("/tmp/".$file_name, "w");
fwrite($test_write, $write_file);
fclose($test_write);
return new xmlrpcresp(new xmlrpcval($file_name));
}
$upload_file2_sig = array(array($xmlrpcBase64,$xmlrpcBase64,
$xmlrpcString));
$upload_file2_doc = 'uploads a binary file';

Apart from the fact that:
- I cannot understand the intended meaning of the line $convert_file =
fopen($write_file, "rb");
- I hope you trust the source of webservice calls, as you're not
validating $file_name for the presence of .. (or other similar escape)
sequences
- you could test the result of fopen before doing fwrite+fclose
- the function signature should read
array(array($xmlrpcString,$xmlrpcBase64, $xmlrpcString));
- you could probably return the numbers of bytes written instead of the
filename
it looks fine.

Post by Frank H
I am using a Python client to send the file. I was playing around
with a Python server to transfer files and the Python
server does not run into any problems with file size.
This is what I have on the python client...
import xmlrpclib
print("Trying to connect...")
server_url = 'http://some_url/new_server.php';
server = xmlrpclib.Server(server_url);
handle = open("nova.bmp")
file_name = "fetch_nova.bmp"
send_file = server.sendFile(xmlrpclib.Binary(handle.read()), file_name)
This is the error I get when trying to use the Python Client/Php Server combo
Trying to connect...
File "testProc_client.py", line 20, in ?
send_file = server.sendFile(xmlrpclib.Binary(handle.read()), file_name)
File "/usr/lib/python2.3/xmlrpclib.py", line 1029, in __call__
return self.__send(self.__name, args)
File "/usr/lib/python2.3/xmlrpclib.py", line 1316, in __request
verbose=self.__verbose
File "/usr/lib/python2.3/xmlrpclib.py", line 1070, in request
headers
xmlrpclib.ProtocolError: <ProtocolError for
mmodev.jpl.nasa.gov/frank/xmlrpc/demo/server/new_server.php: -1 >

Sorry, but the Python error does not help that much.

You should:
- check the php error log on the server for any hint
- check memory_limit, max_execution_time and especially post_max_size
php.ini directives
- enable debug mode on the php server object

bye
Gaetano