Test failure during 100-continue

Also:

- Remove duplicate and unused code
- Tighten scope of HttpReadDisconnect handler - we only want to ignore this for
the initial read, not for the entire block that includes things like the expect
handling.

mitmproxy/proxy/modes/socks_proxy.py

@@ -5,9 +5,6 @@ from mitmproxy.net import socks
 
 class Socks5Proxy(protocol.Layer, protocol.ServerConnectionMixin):
 
-    def __init__(self, ctx):
-        super().__init__(ctx)
-
     def __call__(self):
         try:
             # Parse Client Greeting

mitmproxy/proxy/protocol/http.py

@@ -160,27 +160,24 @@ class HttpLayer(base.Layer):
 
     def _process_flow(self, f):
         try:
-            request = self.read_request_headers(f)
+            try:
+                request = self.read_request_headers(f)
+            except exceptions.HttpReadDisconnect:
+                # don't throw an error for disconnects that happen before/between requests.
+                return False
+
             f.request = request
             self.channel.ask("requestheaders", f)
 
-            request.data.content = b"".join(self.read_request_body(request))
-            request.timestamp_end = time.time()
             if request.headers.get("expect", "").lower() == "100-continue":
                 # TODO: We may have to use send_response_headers for HTTP2 here.
                 self.send_response(http.expect_continue_response)
                 request.headers.pop("expect")
-                request.content = b"".join(self.read_request_body(request))
-                request.timestamp_end = time.time()
+
+            request.data.content = b"".join(self.read_request_body(request))
+            request.timestamp_end = time.time()
 
             validate_request_form(self.mode, request)
-
-            if self.mode == "regular" and request.first_line_format == "absolute":
-                request.first_line_format = "relative"
-
-        except exceptions.HttpReadDisconnect:
-            # don't throw an error for disconnects that happen before/between requests.
-            return False
         except exceptions.HttpException as e:
             # We optimistically guess there might be an HTTP client on the
             # other end

test/mitmproxy/test_eventsequence.py

@@ -3,15 +3,17 @@ import contextlib
 from . import tservers
 
 
-class EAddon:
-    def __init__(self, handlers):
+class Eventer:
+    def __init__(self, **handlers):
         self.failure = None
+        self.called = []
         self.handlers = handlers
-        for i in events.Events:
+        for i in events.Events - {"tick"}:
             def mkprox():
                 evt = i
 
                 def prox(*args, **kwargs):
+                    self.called.append(evt)
                     if evt in self.handlers:
                         try:
                             handlers[evt](*args, **kwargs)
@@ -26,23 +28,41 @@ class EAddon:
 
 class SequenceTester:
     @contextlib.contextmanager
-    def events(self, **kwargs):
-        m = EAddon(kwargs)
-        self.master.addons.add(m)
+    def addon(self, addon):
+        self.master.addons.add(addon)
         yield
-        self.master.addons.remove(m)
-        if m.failure:
-            raise m.failure
+        self.master.addons.remove(addon)
+        if addon.failure:
+            raise addon.failure
 
 
 class TestBasic(tservers.HTTPProxyTest, SequenceTester):
     def test_requestheaders(self):
 
-        def req(f):
+        def hdrs(f):
             assert f.request.headers
             assert not f.request.content
 
-        with self.events(requestheaders=req):
+        def req(f):
+            assert f.request.headers
+            assert f.request.content
+
+        with self.addon(Eventer(requestheaders=hdrs, request=req)):
             p = self.pathoc()
             with p.connect():
                 assert p.request("get:'%s/p/200':b@10" % self.server.urlbase).status_code == 200
+
+    def test_100_continue_fail(self):
+        e = Eventer()
+        with self.addon(e):
+            p = self.pathoc()
+            with p.connect():
+                p.request(
+                    """
+                        get:'%s/p/200'
+                        h'expect'='100-continue'
+                        h'content-length'='1000'
+                        da
+                    """ % self.server.urlbase
+                )
+            assert e.called[-1] == "requestheaders"