2 files changed, 26 insertions, 1 deletions
diff --git a/extensions/net/lib.rs b/extensions/net/lib.rs
index f3281a2fb..11d0b4493 100644
--- a/extensions/net/lib.rs
+++ b/extensions/net/lib.rs
@@ -88,12 +88,22 @@ pub fn get_unstable_declaration() -> PathBuf {
   PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("lib.deno_net.unstable.d.ts")
 }
 
-pub fn init<P: NetPermissions + 'static>(unstable: bool) -> Extension {
+#[derive(Clone)]
+pub struct DefaultTlsOptions {
+  pub ca_data: Option<Vec<u8>>,
+}
+
+pub fn init<P: NetPermissions + 'static>(
+  ca_data: Option<Vec<u8>>,
+  unstable: bool,
+) -> Extension {
   let mut ops_to_register = vec![];
   ops_to_register.extend(io::init());
   ops_to_register.extend(ops::init::<P>());
   ops_to_register.extend(ops_tls::init::<P>());
 
+  let default_tls_options = DefaultTlsOptions { ca_data };
+
   Extension::builder()
     .js(include_js_files!(
       prefix "deno:extensions/net",
@@ -103,6 +113,7 @@ pub fn init<P: NetPermissions + 'static>(unstable: bool) -> Extension {
     ))
     .ops(ops_to_register)
     .state(move |state| {
+      state.put(default_tls_options.clone());
       state.put(UnstableChecker { unstable });
       Ok(())
     })
diff --git a/extensions/net/ops_tls.rs b/extensions/net/ops_tls.rs
index 092c74a69..a082f7f62 100644
--- a/extensions/net/ops_tls.rs
+++ b/extensions/net/ops_tls.rs
@@ -10,6 +10,7 @@ use crate::ops::OpAddr;
 use crate::ops::OpConn;
 use crate::resolve_addr::resolve_addr;
 use crate::resolve_addr::resolve_addr_sync;
+use crate::DefaultTlsOptions;
 use crate::NetPermissions;
 use deno_core::error::bad_resource;
 use deno_core::error::bad_resource_id;
@@ -60,6 +61,7 @@ use std::convert::From;
 use std::fs::File;
 use std::io;
 use std::io::BufReader;
+use std::io::Cursor;
 use std::io::ErrorKind;
 use std::ops::Deref;
 use std::ops::DerefMut;
@@ -702,6 +704,7 @@ where
   };
   let cert_file = args.cert_file.as_deref();
 
+  let default_tls_options;
   {
     super::check_unstable2(&state, "Deno.startTls");
     let mut s = state.borrow_mut();
@@ -710,6 +713,7 @@ where
     if let Some(path) = cert_file {
       permissions.check_read(Path::new(path))?;
     }
+    default_tls_options = s.borrow::<DefaultTlsOptions>().clone();
   }
 
   let hostname_dns = DNSNameRef::try_from_ascii_str(hostname)
@@ -733,6 +737,10 @@ where
   tls_config
     .root_store
     .add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
+  if let Some(ca_data) = default_tls_options.ca_data {
+    let reader = &mut Cursor::new(ca_data);
+    tls_config.root_store.add_pem_file(reader).unwrap();
+  };
   if let Some(path) = cert_file {
     let key_file = File::open(path)?;
     let reader = &mut BufReader::new(key_file);
@@ -779,6 +787,7 @@ where
   let port = args.port;
   let cert_file = args.cert_file.as_deref();
 
+  let default_tls_options;
   {
     let mut s = state.borrow_mut();
     let permissions = s.borrow_mut::<NP>();
@@ -786,6 +795,7 @@ where
     if let Some(path) = cert_file {
       permissions.check_read(Path::new(path))?;
     }
+    default_tls_options = s.borrow::<DefaultTlsOptions>().clone();
   }
 
   let hostname_dns = DNSNameRef::try_from_ascii_str(hostname)
@@ -804,6 +814,10 @@ where
   tls_config
     .root_store
     .add_server_trust_anchors(&webpki_roots::TLS_SERVER_ROOTS);
+  if let Some(ca_data) = default_tls_options.ca_data {
+    let reader = &mut Cursor::new(ca_data);
+    tls_config.root_store.add_pem_file(reader).unwrap();
+  };
   if let Some(path) = cert_file {
     let key_file = File::open(path)?;
     let reader = &mut BufReader::new(key_file);