Build patched Go runtime, recompile gomobile

README.md

@@ -18,6 +18,8 @@ Go package for building [go-tun2socks](https://github.com/eycorsican/go-tun2sock
 
 We use a custom Golang runtime to build the iOS and macOS framework built off Go 1.12. The [patch](https://go-review.googlesource.com/c/go/+/159117) improves memory reporting to the OS. This should not be necessary after Go 1.13 is released (scheduled for August 2019).
 
+Additionally, Go 1.12 calls private APIs on Darwin, which is not approved for Mac App Store distribution. We have applied this [patch](https://go-review.googlesource.com/c/go/+/170640/), scheduled for release on Go 1.12.2.
+
 You can use our pre-compiled Darwin binary, at `tools/go` or build it yourself:
 
 ```bash
@@ -29,8 +31,9 @@ mv go go1.12
 git clone https://go.googlesource.com/go
 cd go
 git checkout release-branch.go1.12
-# Apply the patch.
+# Apply the patches.
 git fetch https://go.googlesource.com/go refs/changes/17/159117/5 && git cherry-pick FETCH_HEAD
+git fetch https://go.googlesource.com/go refs/changes/40/170640/6 && git cherry-pick FETCH_HEAD
 # Update the version.
 echo "go1.12-dev-runtime" > VERSION
 # Build the runtime.

bin/macos/Tun2socks.framework/Versions/A/Headers/Tun2socks.objc.h

@@ -33,7 +33,7 @@
 AppleTunnel instance that should be used to input packets to the tunnel.
 
 `tunWriter` is used to output packets to the TUN (VPN).
-`host` is  IP address of the SOCKS proxy server.
+`host` is the IP address of the SOCKS proxy server.
 `port` is the port of the SOCKS proxy server.
 `isUDPEnabled` indicates whether the tunnel and/or network enable UDP proxying.
 
@@ -46,7 +46,7 @@ FOUNDATION_EXPORT id<Tun2socksAppleTunnel> _Nullable Tun2socksConnectSocksTunnel
 @class Tun2socksTunWriter;
 
 /**
- * AppleTunnel embeds the tun2socks.Tunnel interface, so it gets exported by gobind.
+ * AppleTunnel embeds the tun2socks.Tunnel interface so it gets exported by gobind.
  */
 @interface Tun2socksAppleTunnel : NSObject <goSeqRefInterface, Tun2socksAppleTunnel> {
 }
@@ -59,6 +59,9 @@ FOUNDATION_EXPORT id<Tun2socksAppleTunnel> _Nullable Tun2socksConnectSocksTunnel
 - (BOOL)write:(NSData* _Nullable)data ret0_:(long*)ret0_ error:(NSError* _Nullable*)error;
 @end
 
+/**
+ * TunWriter is an interface that allows for outputting packets to the TUN (VPN).
+ */
 @interface Tun2socksTunWriter : NSObject <goSeqRefInterface, Tun2socksTunWriter> {
 }
 @property(strong, readonly) id _ref;