> ## Documentation Index > Fetch the complete documentation index at: https://site.aspect.build/llms.txt > Use this file to discover all available pages before exploring further. # GrpcStream `function` **GrpcStream.cancelled** 
        
          def GrpcStream.cancelled() -> bool
Returns `True` if the client has cancelled the originating call. Same signal as `rpc.cancelled()` from the call this stream came from. `function` **GrpcStream.complete** 
        
          def GrpcStream.complete(
          \*,
          status: typing.Any = ...
          ) -> None
Close the stream. No-arg = success; `status =` = error. Subsequent `push` calls after `complete` raise. `function` **GrpcStream.push** 
        
          def GrpcStream.push(msg: typing.Any) -> None
Push one message to the response stream. Runtime-typechecked against the RPC's response type; mismatched types raise. Blocks on backpressure. After the client has cancelled, push is best-effort (the message is dropped, no error raised) — producer loops should poll `stream.cancelled()` to bail out.