Can specify custom server root certificate for client

Cargo.lock

@@ -837,6 +837,21 @@ dependencies = [
  "want",
 ]
 
+[[package]]
+name = "hyper-rustls"
+version = "0.23.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d87c48c02e0dc5e3b849a2041db3029fd066650f8f717c07bf8ed78ccb895cac"
+dependencies = [
+ "http",
+ "hyper",
+ "log",
+ "rustls",
+ "rustls-native-certs",
+ "tokio",
+ "tokio-rustls",
+]
+
 [[package]]
 name = "hyper-tls"
 version = "0.5.0"
@@ -1279,6 +1294,7 @@ dependencies = [
  "http",
  "http-body",
  "hyper",
+ "hyper-rustls",
  "hyper-tls",
  "ipnet",
  "js-sys",
@@ -1288,16 +1304,20 @@ dependencies = [
  "native-tls",
  "percent-encoding",
  "pin-project-lite",
+ "rustls",
+ "rustls-pemfile",
  "serde",
  "serde_json",
  "serde_urlencoded",
  "tokio",
  "tokio-native-tls",
+ "tokio-rustls",
  "tower-service",
  "url",
  "wasm-bindgen",
  "wasm-bindgen-futures",
  "web-sys",
+ "webpki-roots",
  "winreg",
 ]
 
@@ -1337,6 +1357,18 @@ dependencies = [
  "webpki",
 ]
 
+[[package]]
+name = "rustls-native-certs"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0167bac7a9f490495f3c33013e7722b53cb087ecbe082fb0c6387c96f634ea50"
+dependencies = [
+ "openssl-probe",
+ "rustls-pemfile",
+ "schannel",
+ "security-framework",
+]
+
 [[package]]
 name = "rustls-pemfile"
 version = "1.0.1"
@@ -1537,8 +1569,11 @@ dependencies = [
  "clap",
  "env_logger",
  "futures",
+ "hyper-rustls",
  "log",
  "reqwest",
+ "rustls",
+ "rustls-pemfile",
  "tokio",
  "tokio-tungstenite",
  "urlencoding",
@@ -1706,8 +1741,12 @@ checksum = "f714dd15bead90401d77e04243611caec13726c2408afd5b31901dfcdcb3b181"
 dependencies = [
  "futures-util",
  "log",
+ "rustls",
+ "rustls-native-certs",
  "tokio",
+ "tokio-rustls",
  "tungstenite",
+ "webpki",
 ]
 
 [[package]]
@@ -1770,10 +1809,12 @@ dependencies = [
  "httparse",
  "log",
  "rand",
+ "rustls",
  "sha-1",
  "thiserror",
  "url",
  "utf-8",
+ "webpki",
 ]
 
 [[package]]