Closer to passing tests.

src/allmydata/immutable/offloaded.py

@@ -203,7 +203,7 @@ class CHKUploadHelper(Referenceable, upload.CHKUploader):
     def _finished(self, ur):
         assert interfaces.IUploadResults.providedBy(ur), ur
         vcapstr = ur.get_verifycapstr()
-        precondition(isinstance(vcapstr, str), vcapstr)
+        precondition(isinstance(vcapstr, bytes), vcapstr)
         v = uri.from_string(vcapstr)
         f_times = self._fetcher.get_times()
 
@@ -492,9 +492,9 @@ class Helper(Referenceable):
     # helper at random.
 
     name = "helper"
-    VERSION = { "http://allmydata.org/tahoe/protocols/helper/v1" :
+    VERSION = { b"http://allmydata.org/tahoe/protocols/helper/v1" :
                  { },
-                "application-version": str(allmydata.__full_version__),
+                b"application-version": allmydata.__full_version__.encode("utf-8"),
                 }
     MAX_UPLOAD_STATUSES = 10
 

src/allmydata/immutable/upload.py

@@ -1816,15 +1816,15 @@ class Uploader(service.MultiService, log.PrefixingLogMixin):
 
     def _got_helper(self, helper):
         self.log("got helper connection, getting versions")
-        default = { "http://allmydata.org/tahoe/protocols/helper/v1" :
+        default = { b"http://allmydata.org/tahoe/protocols/helper/v1" :
                     { },
-                    "application-version": b"unknown: no get_version()",
+                    b"application-version": b"unknown: no get_version()",
                     }
         d = add_version_to_remote_reference(helper, default)
         d.addCallback(self._got_versioned_helper)
 
     def _got_versioned_helper(self, helper):
-        needed = "http://allmydata.org/tahoe/protocols/helper/v1"
+        needed = b"http://allmydata.org/tahoe/protocols/helper/v1"
         if needed not in helper.version:
             raise InsufficientVersionError(needed, helper.version)
         self._helper = helper

src/allmydata/test/test_helper.py

@@ -218,7 +218,7 @@ class AssistedUpload(unittest.TestCase):
         d.addCallback(_ready)
         def _uploaded(results):
             the_uri = results.get_uri()
-            assert "CHK" in the_uri
+            assert b"CHK" in the_uri
         d.addCallback(_uploaded)
 
         def _check_empty(res):