organize examples

This commit is largely based on work by Thiago Arrais (@thiagoarrais)
and Shane Bradfield (@l33tLumberjack). I wasn't really able to get their
PR reasonably merged onto the latest master, so I reapplied their changes
manually here and did some further improvements on that.

1 files changed, 10 insertions, 0 deletions

diff --git a/examples/simple/modify_form.py b/examples/simple/modify_form.py
new file mode 100644
index 00000000..b425efb0
--- /dev/null
+++ b/examples/simple/modify_form.py
@@ -0,0 +1,10 @@
+def request(flow):
+    if flow.request.urlencoded_form:
+        # If there's already a form, one can just add items to the dict:
+        flow.request.urlencoded_form["mitmproxy"] = "rocks"
+    else:
+        # One can also just pass new form data.
+        # This sets the proper content type and overrides the body.
+        flow.request.urlencoded_form = [
+            ("foo", "bar")
+        ]