Example of progressive downloading with HTTPotion, showing percentage and downloaded bytes as you go.

iex -S mix  # In a project with HTTPotion in mix.exs.
iex(1)> ProgressiveDownloader.run
Let's download 43.2 MB…
2.31% (1.0 MB)
4.63% (2.0 MB)
6.94% (3.0 MB)
9.26% (4.0 MB)
11.57% (5.0 MB)
13.89% (6.0 MB)
16.2% (7.0 MB)
18.52% (8.0 MB)
20.83% (9.0 MB)
23.15% (10.0 MB)
25.46% (11.0 MB)
27.78% (12.0 MB)
30.09% (13.0 MB)
32.4% (14.0 MB)
34.72% (15.0 MB)
37.03% (16.0 MB)
39.35% (17.0 MB)
41.66% (18.0 MB)
43.98% (19.0 MB)
46.29% (20.0 MB)
48.61% (21.0 MB)
50.92% (22.0 MB)
53.24% (23.0 MB)
55.55% (24.0 MB)
57.87% (25.0 MB)
60.18% (26.0 MB)
62.49% (27.0 MB)
64.81% (28.0 MB)
67.12% (29.0 MB)
69.44% (30.0 MB)
71.75% (31.0 MB)
74.07% (32.0 MB)
76.38% (33.0 MB)
78.7% (34.0 MB)
81.01% (35.0 MB)
83.33% (36.0 MB)
85.64% (37.0 MB)
87.96% (38.0 MB)
90.27% (39.0 MB)
92.58% (40.0 MB)
94.9% (41.0 MB)
97.21% (42.0 MB)
99.53% (43.0 MB)
100.0% (43.2 MB)
All downloaded! See: /tmp/posture.mp4