PPB_HostResolver

PPAPI Method	Assumes Threads	Emscripten	Web API	Limitations
Create	x	GAP	GAP (partial) - No direct equivalent
Resolve	x	GAP	GAP (partial) - No direct equivalent
GetCanonicalName	x	GAP	GAP (partial) - No direct equivalent
GetNetAddressCount	x	GAP	GAP (partial) - No direct equivalent
GetNetAddress	x	GAP	GAP (partial) - No direct equivalent

PPB_NetAddress

PPAPI Method	Assumes Threads	Emscripten	Web API	Limitations
CreateFromIPv4Address	x	GAP	GAP (partial) - No direct equivalent
CreateFromIPv6Address	x	GAP	GAP (partial) - No direct equivalent
GetFamily	x	GAP	GAP (partial) - No direct equivalent
DescribeAsString	x	GAP	GAP (partial) - No direct equivalent
DescribeAsIPv4Address	x	GAP	GAP (partial) - No direct equivalent
DescribeAsIPv6Address	x	GAP	GAP (partial) - No direct equivalent

PPB_NetworkList

PPAPI Method	Assumes Threads	Emscripten	Web API	Limitations
GetCount	x	GAP	GAP - No direct equivalent
GetName	x	GAP	GAP - No direct equivalent
GetType	x	GAP	GAP - No direct equivalent
GetState	x	GAP	GAP - No direct equivalent
GetIpAddress	x	GAP	GAP - No direct equivalent
GetDisplayName	x	GAP	GAP - No direct equivalent
GetMTU	x	GAP	GAP - No direct equivalent

PPB_NetworkMonitor

PPAPI Method	Assumes Threads	Emscripten	Web API	Limitations
Create	x	GAP	GAP - No direct equivalent
UpdateNetworkList	x	GAP	GAP - No direct equivalent

PPB_NetworkProxy

PPAPI Method	Assumes Threads	Emscripten	Web API	Limitations
GetProxyForURL	x	GAP	GAP - No direct equivalent

PPB_TCPSocket and PPB_UDPSocket

There is not a direct 1:1 mapping for migration. Instead, we have outlined some user scenarios below and what the recommended migration path is.

Use Case	Recommendations
Screen sharing	getDisplayMedia and WebRTC ( demo)
Loading from a local server to minimize bandwidth usage	XHR, Fetch, Streams, Service Worker, Cache APIs
Loading from a local instance of a web app / Connecting to a local instance of a web app	WebRTC
Chat	WebSocket*
Realtime audio/video communication	WebRTC
Collaboration	WebSocket*
Realtime multiplayer games	WebTransport** unless P2P in which case WebRTC (or WebTransport over RTCIceTransport)
Realtime interactive streaming	WebTransport**
Communicating with legacy server	Proxy server or middleware to do protocol conversion. Feedback to bit.ly/network-api-gaps

*: Or WebTransport in the future
**: See chromestatus for availability