chore(provider): make websockets optional (#45)

Cargo.lock

@@ -526,9 +526,9 @@ checksum = "e88a8acf291dafb59c2d96e8f59828f3838bb1a70398823ade51a84de6a6deed"
 
 [[package]]
 name = "fastrand"
-version = "1.2.4"
+version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a64b0126b293b050395b37b10489951590ed024c03d7df4f249d219c8ded7cbf"
+checksum = "b90eb1dec02087df472ab9f0db65f27edaa654a746830042688bcc2eaf68090f"
 
 [[package]]
 name = "fixed-hash"
@@ -1082,9 +1082,9 @@ checksum = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 
 [[package]]
 name = "openssl"
-version = "0.10.29"
+version = "0.10.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cee6d85f4cb4c4f59a6a85d5b68a233d280c82e29e822913b9c8b129fbf20bdd"
+checksum = "8d575eff3665419f9b83678ff2815858ad9d11567e082f5ac1814baba4e2bcb4"
 dependencies = [
  "bitflags",
  "cfg-if",
@@ -1102,9 +1102,9 @@ checksum = "77af24da69f9d9341038eba93a073b1fdaaa1b788221b00a69bce9e762cb32de"
 
 [[package]]
 name = "openssl-sys"
-version = "0.9.57"
+version = "0.9.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7410fef80af8ac071d4f63755c0ab89ac3df0fd1ea91f1d1f37cf5cec4395990"
+checksum = "a842db4709b604f0fe5d1170ae3565899be2ad3d9cbc72dedc789ac0511f78de"
 dependencies = [
  "autocfg",
  "cc",
@@ -1127,9 +1127,9 @@ dependencies = [
 
 [[package]]
 name = "parking"
-version = "1.0.1"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a7fad362df89617628a7508b3e9d588ade1b0ac31aa25de168193ad999c2dd4"
+checksum = "c4029bc3504a62d92e42f30b9095fdef73b8a0b2a06aa41ce2935143b05a1a06"
 
 [[package]]
 name = "percent-encoding"
@@ -1169,18 +1169,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
-[[package]]
-name = "piper"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01608bfa680dafb103f9207fa944facf572e4e3e708d10de19a0d0c3d36e5f18"
-dependencies = [
- "crossbeam-utils",
- "futures-io",
- "futures-sink",
- "futures-util",
-]
-
 [[package]]
 name = "pkg-config"
 version = "0.3.17"
@@ -1531,9 +1519,9 @@ checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
 
 [[package]]
 name = "smol"
-version = "0.1.15"
+version = "0.1.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4c3546640e104d1ee544df9c08ac4896d44ef1de89a6d7cc4a3c22f677d5ef38"
+checksum = "620cbb3c6e34da57d3a248cda0cd01cd5848164dc062e764e65d06fe3ea7aed5"
 dependencies = [
  "async-task",
  "blocking",
@@ -1543,11 +1531,11 @@ dependencies = [
  "futures-util",
  "libc",
  "once_cell",
- "piper",
  "scoped-tls",
  "slab",
  "socket2",
- "wepoll-binding",
+ "wepoll-sys-stjepang",
+ "winapi 0.3.8",
 ]
 
 [[package]]
@@ -1971,20 +1959,10 @@ dependencies = [
 ]
 
 [[package]]
-name = "wepoll-binding"
+name = "wepoll-sys-stjepang"
-version = "2.0.2"
+version = "1.0.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "374fff4ff9701ff8b6ad0d14bacd3156c44063632d8c136186ff5967d48999a7"
+checksum = "6fd319e971980166b53e17b1026812ad66c6b54063be879eb182342b55284694"
-dependencies = [
- "bitflags",
- "wepoll-sys",
-]
-
-[[package]]
-name = "wepoll-sys"
-version = "2.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9082a777aed991f6769e2b654aa0cb29f1c3d615daf009829b07b66c7aff6a24"
 dependencies = [
  "cc",
 ]

ethers-providers/Cargo.toml

@@ -26,17 +26,17 @@ url = { version = "2.1.1", default-features = false }
 # required for implementing stream on the filters
 futures-core = { version = "0.3.5", default-features = false }
 futures-util = { version = "0.3.5", default-features = false }
+futures-timer = { version = "3.0.2", default-features = false }
 pin-project = { version = "0.4.20", default-features = false }
-async-tungstenite = { version = "0.6.0", default-features = false }
 
 # ws support async-std and tokio runtimes for the convenience methods
+async-tungstenite = { version = "0.6.0", default-features = false, optional = true }
 async-std = { version = "1.6.2", default-features = false, optional = true }
 tokio = { version = "0.2.21", default-features = false, optional = true }
 
 # needed for tls
 real-tokio-native-tls = { package = "tokio-native-tls", version = "0.1.0", optional = true }
 async-tls = { version = "0.7.0", optional = true }
-futures-timer = "3.0.2"
 
 [dev-dependencies]
 ethers = { version = "0.1.3", path = "../ethers" }
@@ -44,15 +44,17 @@ ethers = { version = "0.1.3", path = "../ethers" }
 rustc-hex = "2.1.0"
 tokio = { version = "0.2.21", default-features = false, features = ["rt-core", "macros"] }
 async-std = { version = "1.6.2", default-features = false, features = ["attributes"] }
-async-tungstenite = { version = "0.6.0", features = ["tokio-runtime"] }
+async-tungstenite = { version = "0.6.0", default-features = false, features = ["tokio-runtime"] }
 
 [features]
 # slightly opinionated, but for convenience we default to tokio-tls
 # to allow websockets w/ TLS support
 default = ["tokio-tls"]
 celo = ["ethers-core/celo"]
+ws = ["async-tungstenite"]
 
 tokio-runtime = [
+    "ws",
     "tokio",
     "async-tungstenite/tokio-runtime"
 ]
@@ -63,6 +65,7 @@ tokio-tls = [
 ]
 
 async-std-runtime = [
+    "ws",
     "async-std",
     "async-tungstenite/async-std-runtime"
 ]

ethers-providers/src/lib.rs

@@ -100,7 +100,7 @@
 //! # }
 //! ```
 mod transports;
-pub use transports::{Http, Ws};
+pub use transports::*;
 
 mod provider;
 

ethers-providers/src/transports/mod.rs

@@ -3,5 +3,7 @@ mod common;
 mod http;
 pub use http::Provider as Http;
 
+#[cfg(feature = "ws")]
 mod ws;
+#[cfg(feature = "ws")]
 pub use ws::Provider as Ws;

ethers/Cargo.toml

@@ -49,7 +49,7 @@ ethers-signers = { version = "0.1.3", path = "../ethers-signers", optional = tru
 
 [dev-dependencies]
 ethers-contract = { version = "0.1.3", path = "../ethers-contract", features = ["abigen"] }
-ethers-providers = { version = "0.1.3", path = "../ethers-providers", features = ["tokio-runtime"] }
+ethers-providers = { version = "0.1.3", path = "../ethers-providers" }
 
 anyhow = "1.0.31"
 rand = "0.7"