iostreams | incredibly powerful streaming library that makes changes | Encryption library

I am trying to install hpctoolkit using spack. In order to do that, I executed :

I tried to unzip a zip file with boost zlib, but it doesn't work ,my boost version is 1.75 which is binary which is have been built,I tried the code below with VS 2013 CE

I tried to use boost library with the code below, but it got a bunch of error when I tried to compile it

I encounter a bug with libvlc where attempting to play video from YouTube result in error http stream error: local stream 1 error: Cancellation (0x8)

C++ code:

I'm trying to get familiar with boost::iostream, so in a example program I'm writing, I want to read a text from a file and write it to file.
I would use my inherited class from file_source/file_sink as device to read/write. In the read method, my class needs to add each character with one and write method needs to subtract one from each character.
First of all, I want to make sure that the reading part of the program works properly so you can see the code as follow:

I want to compress multiple buffers (in my case video frames from different sources) into one new buffer via boost's zlib compression and then, later, write everything into a file on the disk. I need these two steps because I want to prepend a header in the file which contains the final size of the compressed buffers (this will later function as offset for the parser). I want to achieve this with boost's iostreams library.

The following related questions arised:

a) Do I need to use filtering_stream of filtering_streambuf? I would expect for the latter to have some kind of buffer behavior already.

b) How can I close the filtering_stream(buf) and write it to a buffer?

c) How can I read the final size of the compressed data? .tellg() is not implemented for these filtering_streams (as mentioned somewhereelse on SO)

d) Can you have multiple sources, i.e. my three buffers or do I need to combine them? (see below for my approach).

I try to create simple echo server with zlib compression following this and this examples.

My idea is to send some string now because I can convert POD types to string (std::string(reinterpret_cast(&pod), sizeof(pod))) before sending when I will be sure the transport layer works.

And there is a problem here. Client compresses data, sends it and says data were sended but the server is blocked on data reading. I cannot understand why it happens.

I tried to use operator<< with out.flush(), also I tried to use boost::iostreams::copy(). The result is the same. The code example is (I use the same source file for server and client depending on args):

I am working remotely on a server that uses modules to handle dependencies. I am trying to install dssp (https://github.com/cmbi/dssp) . On github one can see the dependencies.

The modules I have loaded are:

I'm sending streaming data between threads using std::iostreams but struggling to extract the data, here's a contrived example: