Function futures::executor::block_on_stream

Important traits for BlockingStream<S>

impl<S> Iterator for BlockingStream<S> where
    S: Unpin + Stream,  type Item = <S as Stream>::Item;

pub fn block_on_stream<S>(stream: S) -> BlockingStream<S> where
    S: Unpin + Stream, 

Turn a stream into a blocking iterator.

When next is called on the resulting BlockingStream, the caller will be blocked until the next element of the Stream becomes available.