This guide describes commonly used protocols that must be in a component's sandbox services (for components v1) or capabilities (for components v2).
See examples of capability configuration for components v1 or components v2.
Typical protocols used for components that require networking are
fuchsia.posix.socket.Provider for creating sockets (socket).fuchsia.net.NameLookup for resolving hostnames (getaddrinfo).fuchsia.device.NameProvider to get the device name (uname).POSIX sockets are provided by libc and fdio through socket calls which require the fuchsia.posix.socket.Provider capability.
Address resolution is similarly provided by libc through getaddrinfo which requires the fuchsia.net.NameLookup capability.