You shouldn’t just compare C++ libraries. First, define your requirements, both functional (what should your networking do) and technical (latency, throughput, available bandwidth, operating systems of both clients and servers). Second, pick a protocols stack. Only then, look for those C++ libraries.
If on step #2 you’ll choose e.g. ProtoBuff + UDP, you’ll have totally different set of available libraries than if you choose SOAP + HTTPS. Besides, very few of those libraries work well on multiple platforms, e.g. libuv does, while libevent does not.
In addition, C++ is not the only choice. I once developed networking module for a game in C#. Have a few friends who are doing the same in finance industry.
If on step #2 you’ll choose e.g. ProtoBuff + UDP, you’ll have totally different set of available libraries than if you choose SOAP + HTTPS. Besides, very few of those libraries work well on multiple platforms, e.g. libuv does, while libevent does not.
In addition, C++ is not the only choice. I once developed networking module for a game in C#. Have a few friends who are doing the same in finance industry.