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POascii error in python serializing a file for SOAP
 

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  1. POascii error in python serializing a file for SOAP
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    <p>I'm working on a soap wrapper for an API (i know REST exists... it's a project in my job), I'm using SUDS library for that.</p> <p>I found <a href="https://stackoverflow.com/questions/6601107/how-to-send-a-file-through-soap-in-python">this</a> question and the answer helped me a lot. After trying a couple of things and modified a little bit the script where that question pointed me I got the following error:</p> <pre><code>UnicodeDecodeError: 'ascii' codec can't decode byte 0x82 in position 2159: ordinal not in range(128) </code></pre> <p>This occurs when sending the request to the SOAP endpoint, I tried to use unicodedata with the NFKD option to normalize it but I still getting the same erros.</p> <p>Since this is not a simple text, this is actual data from an audio file, I'm not sure but I guess that modifying it should corrupt the actual data, so I don't know what to do here.</p> <p>This is what I'm doing, this isn't too different from the procedure in the other question:</p> <pre><code>file = open('path/to/the/file.mp3', 'rb') mime_type = 'audio/mpeg' audio_data = file.read() bin_param = (audio_data, uuid.uuid4(), mime_type) with_soap_attachment(client.service.set_greeting, bin_param, request_data) </code></pre> <p>The script as far as I understood, transforms all the input arguments into a SOAP message string and then encapsulates it into a Request object and send it to the SOAP endpoint, so, the problem is that audio_data contains invalid ascii characters.</p> <p>Any clue here?</p> <p><strong>EDIT: 04/04/2013</strong></p> <p>Here is the actual code of the wrapper</p> <pre><code>#coding: utf-8 from suds.transport import Request import re import uuid def with_soap_attachment(suds_method, attachment_data, soap_location, *args, **kwargs): MIME_DEFAULT = 'text/plain' attachment_transfer_encoding = 'binary' soap_method = suds_method.method if len(attachment_data) == 3: data, attachment_id, attachment_mimetype = attachment_data elif len(attachment_data) == 2: data, attachment_mimetype = attachment_data attachment_id = uuid.uuid4() elif len(attachment_data) == 1: data = attachment_data attachment_mimetype = MIME_DEFAULT attachment_id = uuid.uuid4() soap_client = suds_method.clientclass(kwargs) binding = soap_method.binding.input soap_xml = binding.get_message(soap_method, args, kwargs) boundary_id = 'uuid:%s' % uuid.uuid4() root_part_id ='uuid:%s' % uuid.uuid4() request_headers = { 'Content-Type': '; '.join([ 'multipart/related', 'type="text/xml"', 'start="&lt;%s&gt;"' % root_part_id, 'boundary="%s"' % boundary_id, ]), } soap_headers = '\n'.join([ 'Content-Type: text/xml; charset=UTF-8', 'Content-Transfer-Encoding: 8bit', 'Content-Id: &lt;%s&gt;' % root_part_id, '', ]) attachment_headers = '\n'.join([ 'Content-Type: %s' % attachment_mimetype, 'Content-Transfer-Encoding: %s' % attachment_transfer_encoding, 'Content-Id: &lt;%s&gt;' % attachment_id, '', ]) request_text = '\n'.join([ '', '--%s' % boundary_id, soap_headers, unicode(soap_xml), '--%s' % boundary_id, attachment_headers, data, '--%s--' % boundary_id ]) location = soap_location headers = suds_method.client.options.headers.copy() headers.update(request_headers) request = Request(location, request_text) request.headers = headers response = suds_method.client.options.transport.send(request) return response </code></pre> <p>Here is the entire traceback</p> <pre><code>--------------------------------------------------------------------------- UnicodeDecodeError Traceback (most recent call last) /home/israelord/.virtualenvs/ringtu-env/local/lib/python2.7/site-packages/django/core/management/commands/shell.pyc in &lt;module&gt;() ----&gt; 1 soap_attachments.with_soap_attachment(service.set_menu_prompt, bin_param, AUTOATTENDANT_ENDPOINT, request) /home/israelord/Work/4geeks/ringtu/ringtu/services/soap_attachments.py in with_soap_attachment(suds_method, attachment_data, soap_location, *args, **kwargs) 54 attachment_headers, 55 data, ---&gt; 56 '--%s--' % boundary_id 57 ]) 58 UnicodeDecodeError: 'ascii' codec can't decode byte 0x82 in position 148: ordinal not in range(128) </code></pre>
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    1. COtry replacing `audio_data = file.read()` with `audio_data = file.read().encode('utf8')`. See if that works.
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    2. CO@IonutHulub `file.read()` already returns `str`.
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    3. CO@wRAR You don't say? the function `encode('utf8')` encodes the string so that 'ascii' codec can decode it. My only concern is that the data will be corrupted and will become uninterpretable for later use.
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      1. USIonut Hulub
 

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