Add wasm-ext-transport (#1070)

* Add wasm-ext-transport

* Fix paths

* Adjust listen_on to return an Iterator

* Adjust read() to produce Iterator

* Remove map_err when possible

* Cargo fmt

* Adjust errors as well

* Small comment fix

* Revert "Adjust errors as well"

This reverts commit 97eb514.

* More dev on Debug

* Differentiate based on error

Author: tomaka

Cargo.toml

@@ -30,6 +30,7 @@ libp2p-core = { version = "0.7.0", path = "./core" }
 libp2p-core-derive = { version = "0.7.0", path = "./misc/core-derive" }
 libp2p-secio = { version = "0.7.0", path = "./protocols/secio", default-features = false }
 libp2p-uds = { version = "0.7.0", path = "./transports/uds" }
+libp2p-wasm-ext = { version = "0.1.0", path = "./transports/wasm-ext" }
 libp2p-websocket = { version = "0.7.0", path = "./transports/websocket", optional = true }
 libp2p-yamux = { version = "0.7.0", path = "./muxers/yamux" }
 parking_lot = "0.7"
@@ -76,5 +77,6 @@ members = [
     "transports/ratelimit",
     "transports/tcp",
     "transports/uds",
-    "transports/websocket"
+    "transports/websocket",
+    "transports/wasm-ext"
 ]

transports/wasm-ext/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "libp2p-wasm-ext"
+version = "0.1.0"
+authors = ["Pierre Krieger <[email protected]>"]
+edition = "2018"
+description = "Allows passing in an external transport in a WASM environment"
+license = "MIT"
+repository = "https://github.com/libp2p/rust-libp2p"
+keywords = ["peer-to-peer", "libp2p", "networking"]
+categories = ["network-programming", "asynchronous"]
+
+[dependencies]
+futures = "0.1"
+js-sys = "0.3.19"
+libp2p-core = { version = "0.7.0", path = "../../core" }
+send_wrapper = "0.2.0"
+tokio-io = "0.1"
+wasm-bindgen = "0.2.42"
+wasm-bindgen-futures = "0.3.19"