Add back in async gen loop

examples/debugging/subactor_bp_in_ctx.py

@@ -6,21 +6,25 @@ async def gen():
     yield 'yo'
     await tractor.breakpoint()
     yield 'yo'
+    await tractor.breakpoint()
 
 
 @tractor.context
 async def just_bp(
     ctx: tractor.Context,
 ) -> None:
 
-    await ctx.started('yo bpin here')
+    await ctx.started()
     await tractor.breakpoint()
 
     # TODO: bps and errors in this call..
-    # async for val in gen():
-    #     print(val)
+    async for val in gen():
+        print(val)
+
+    # await trio.sleep(0.5)
 
-    await trio.sleep(0.5)
+    # prematurely destroy the connection
+    await ctx.chan.aclose()
 
     # THIS CAUSES AN UNRECOVERABLE HANG
     # without latest ``pdbpp``:
@@ -30,20 +34,15 @@ async def just_bp(
 
 async def main():
     async with tractor.open_nursery(
-        # loglevel='transport',
         debug_mode=True,
     ) as n:
         p = await n.start_actor(
             'bp_boi',
             enable_modules=[__name__],
-            # debug_mode=True,
         )
         async with p.open_context(
             just_bp,
         ) as (ctx, first):
-
-            # await tractor.breakpoint()
-            # breakpoint()
             await trio.sleep_forever()