Henner: I'm not sure what you mean by the datastream being transparent, but basically I'm sending a GPB instance from the server to the client. Initially I used ObjectOutputStream on the server, ObjectInputStream on the client. I then changed the client to use DataInputStream (apologies, my previous post stated output when I meant input).
I'm just sending one instance each run for simplicity (my object is a simple one) -the exact same GPB instance that worked when I used Object IO streams on the client and server that worked -and then stopping. The only thing that has changed has been the input stream type on the client. Basically, on the client side I called the GPB object's "parseFrom" method with the DataInputStream.as an argument and expected it to work but got that error message. On Dec 2, 4:17 pm, Henner Zeller <[email protected]> wrote: > Are your ObjectOutputStreams transparent ? Or do they prepend/append > things to the data ? > > On Wed, Dec 2, 2009 at 13:11, Nigel Pickard <[email protected]> wrote: > > Oh, wait.... So I have a test Java app where one thread is running as > > a server, one as a client. > > > I've been sending a GPB defined class instance between them, no > > problem when I use Object I/O streams (e.g. ObjectOutputStream on the > > server, ObjectInputStream on the client. I've been calling writeTo > > and parseFrom on the GBP object successfully. > > > If I understand the previous posts correctly it should not make a > > difference which outputstream or inputstream type I use, right? The > > stream of whatever type it is should just be a series of bytes, able > > to be parsed by my GBP object.... But if I change my > > ObjectOutputStream to DataOutputStream on my client (so I'm leaving my > > server still using ObjectInputStream) I get the following error: > > > "com.google.protobuf.InvalidProtocolBufferException: Protocol message > > end-group tag did not match expected tag." > > > Wouldn't this suggest there is a difference (at least in Java) > > concerning which inputstream you use? > > > -- > > > You received this message because you are subscribed to the Google Groups > > "Protocol Buffers" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group > > athttp://groups.google.com/group/protobuf?hl=en. -- You received this message because you are subscribed to the Google Groups "Protocol Buffers" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/protobuf?hl=en.
