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Created attachment 6658 [details]
In very simple scenarios, DeflateStream will block indefinitely on a Read for no good reason. I am attaching a simple test case to reproduce the issue. The Read returns fine and decompresses correctly with Microsoft's .NET runtime. With Mono 3.2.8 and also 3.4.0 it is broken.
See attached test case.
It appears the bug is in UnmanagedRead(..) of DeflateStream.cs. There is a loop within the method that won't return until the default buffer size of 4096 number of bytes is read. The length parameter is 4096 when the method is run.
Thanks for reporting the bug and for the test case.
The pull request for this issue can be found in the link below.
Fixed in master 8da27c63c37365e4467b2e780e3febcf59c8e0c7.