$http ignores HTTP headers with falsy values

[romario333]

$http does not send HTTP headers if they have falsy values. For example following code does not work, header is not sent.

$http(..., headers: {'Content-Version', 0})

This issue occurs at minimum in the unstable version of Angular and master.

Here is a failing test-case for $httpBackend which demonstrates the issue:

  it('should set requested headers even if they have falsy values', function() {
    $backend('POST', 'URL', null, noop, {'X-header1': 0, 'X-header2': '', 'X-header3': false});
    xhr = MockXhr.$$lastInstance;

    expect(xhr.$$reqHeaders).toEqual({
      'X-header1': 0,
      'X-header2': '',
      'X-header3': false
    });
  });

[btford]

As part of our effort to clean out old issues, this issue is being automatically closed since it has been inactivite for over two months.

Please try the newest versions of Angular (1.0.8 and 1.2.0-rc.1), and if the issue persists, comment below so we can discuss it.

Thanks!

[romario333]

This issue persists on 1.2.0-rc1.

[btford]

Thanks for verifying!

[jlaine]

Before this commit you could let the browser set the Content-Type header by passing {'Content-Type': false}, but this no longer works. This is problematic when submitting FormData as multipart/form-data, because the boundary is not known in advance.

EDIT: the answer seems to be to pass {'Content-Type': undefined}

[anjianshi]

@jlaine Thank you! I just ran into this problem