mitmproxy/examples/simple/upsidedownternet.py

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"""
This script rotates all images passing through the proxy by 180 degrees.
"""
import io
from PIL import Image
def response(flow):
if flow.response.headers.get("content-type", "").startswith("image"):
s = io.BytesIO(flow.response.content)
img = Image.open(s).rotate(180)
s2 = io.BytesIO()
img.save(s2, "png")
flow.response.content = s2.getvalue()
flow.response.headers["content-type"] = "image/png"