Broken HTTP access to polytope in 0.3.2

[sandorkertesz]

What happened?

It seems #15 breaks the http access. The attached example works with 0.3.1 but broken in 0.3.2.

The problem comes from this method in http.py:

def title(self):
        headers = self.headers()
        if "content-disposition" in headers:
            value, params = parse_separated_header(headers["content-disposition"])
            if "filename" in params:
                return params["filename"]
        return super().title()

Here parse_separated_header() returns a dict so the return value does not seem to be treated correctly.

What are the steps to reproduce the bug?

Use this code with earthkit.data and multiurl=0.3.2:

import earthkit.data

request = {
   "class": "od",
   "stream" : "enfo",
   "type" : "pf",
   "date" : "20241107",
   "time" : "0000",
   "levtype" : "sfc",
   "expver" : "0079",
   "domain" : "g",
   "param" : "164/167/169",
   "number" : "1/to/50",
   "feature" : {
       "type" : "timeseries",
       "points": [[-9.10, 38.78]],
       "axis": "step",
       "range" : {
           "start" : 0,
           "end" : 360,
       }
   },
   "format": "covjson",
}

ds = earthkit.data.from_source("polytope", "ecmwf-mars", request, stream=False, address='polytope-test.ecmwf.int')

This will generate the following error:

string indices must be integers
Traceback (most recent call last):
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/utils/lazy.py", line 32](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/utils/lazy.py#line=31), in source
    self._source = from_source(
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/__init__.py", line 150](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/__init__.py#line=149), in from_source
    src = get_source(name, *args, **kwargs)
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/__init__.py", line 131](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/__init__.py#line=130), in __call__
    source = klass(*args, **kwargs)
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/core/__init__.py", line 22](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/core/__init__.py#line=21), in __call__
    obj.__init__(*args, **kwargs)
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/url.py", line 217](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/url.py#line=216), in __init__
    self._download()
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/url.py", line 272](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/url.py#line=271), in _download
    self.path = self.cache_file(
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/__init__.py", line 68](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/__init__.py#line=67), in cache_file
    return cache_file(owner, create, args, **kwargs)
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/core/caching.py", line 1022](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/core/caching.py#line=1021), in cache_file
    owner_data = create(path + ".tmp", args)
  File "[/Users/cgr/git/earthkit-data/src/earthkit/data/sources/url.py", line 269](http://localhost:8888/lab/tree/_dev/writers/src/earthkit/data/sources/url.py#line=268), in download
    self.downloader.download(target)
  File "[/Users/cgr/git/multiurl/multiurl/base.py", line 126](http://localhost:8888/Users/cgr/git/multiurl/multiurl/base.py#line=125), in download
    desc=self.title(),
  File "[/Users/cgr/git/multiurl/multiurl/http.py", line 130](http://localhost:8888/Users/cgr/git/multiurl/multiurl/http.py#line=129), in title
    return params["filename"]
TypeError: string indices must be integers

Version

0.3.2

Platform (OS and architecture)

any

Relevant log output

No response

Accompanying data

No response

Organisation

ECMWF