Windows compatibility fixes

Merge pull request #1414

- Conditional compilation was added to exclude `store_forward` Tokio layer to be added for Windows builds. This removes  `store_forward` functionality from Windpows, but provides a temporary fix.
- Small refactoring for `fn load_users()` in `lmdb.rs`
- Windows build and run instructions where SQLite is a dependency

base_layer/wallet/README.md

@@ -1 +1,13 @@
-# Tari Wallet
+# Tari Wallet
+
+Foreign Function interface for the Tari Android and Tari iOS Wallets.
+
+This crate is part of the [Tari Cryptocurrency](https://tari.com) project.
+
+## Build setup (Mac)
+
+See README.md in wallet_ffi crate
+
+## Setup (Windows)
+
+See README.md in wallet_ffi crate

base_layer/wallet_ffi/README.md

@@ -114,3 +114,13 @@ sh mobile_build.sh
 
 The relevant libraries will then be built and placed in the appropriate directories of the Wallet-iOS and Wallet-Android repositories. 
 
+# Setup (Windows)
+
+## Test
+
+1. Download SQL Lite (https://www.sqlite.org/index.html - 64bit) and unzip
+2. `sqlite3.dll` must be accessible via the session path
+
+## Build
+
+ToDo -  Android only

comms/dht/src/dht.rs

@@ -162,8 +162,7 @@ impl Dht {
         let saf_storage = Arc::new(store_forward::SafStorage::new(
             self.config.saf_msg_cache_storage_capacity,
         ));
-
-        ServiceBuilder::new()
+        let builder = ServiceBuilder::new()
             .layer(inbound::DeserializeLayer::new())
             .layer(inbound::ValidateLayer::new(
                 self.config.network,
@@ -176,7 +175,12 @@ impl Dht {
             .layer(store_forward::ForwardLayer::new(
                 Arc::clone(&self.peer_manager),
                 self.outbound_requester(),
-            ))
+            ));
+
+        // FIXME: The store and forward layers are excluded for Windows builds due to an unresolved stack overflow
+        // (#1416)
+        #[cfg(not(target_os = "windows"))]
+        let builder = builder
             .layer(store_forward::StoreLayer::new(
                 self.config.clone(),
                 Arc::clone(&self.peer_manager),
@@ -190,15 +194,16 @@ impl Dht {
                 Arc::clone(&self.node_identity),
                 Arc::clone(&self.peer_manager),
                 self.outbound_requester(),
-            ))
-            .layer(inbound::DhtHandlerLayer::new(
-                self.config.clone(),
-                Arc::clone(&self.node_identity),
-                Arc::clone(&self.peer_manager),
-                self.discovery_service_requester(),
-                self.outbound_requester(),
-            ))
-            .into_inner()
+            ));
+
+        let builder = builder.layer(inbound::DhtHandlerLayer::new(
+            self.config.clone(),
+            Arc::clone(&self.node_identity),
+            Arc::clone(&self.peer_manager),
+            self.discovery_service_requester(),
+            self.outbound_requester(),
+        ));
+        builder.into_inner()
     }
 
     /// Returns an the full DHT stack as a `tower::layer::Layer`. This can be composed with
@@ -366,6 +371,8 @@ mod test {
         assert_eq!(msg, b"secret");
     }
 
+    // FIXME: This test is excluded for Windows builds due to an unresolved stack overflow issue (#1416)
+    #[cfg(not(target_os = "windows"))]
     #[tokio_macros::test_basic]
     async fn stack_forward() {
         let node_identity = make_node_identity();

infrastructure/storage/tests/lmdb.rs

@@ -21,7 +21,15 @@
 // USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 use serde::{Deserialize, Serialize};
-use std::{net::Ipv4Addr, path::PathBuf, str::FromStr, sync::Arc, thread};
+use std::{
+    fs::File,
+    io::{BufRead, BufReader},
+    net::Ipv4Addr,
+    path::PathBuf,
+    str::FromStr,
+    sync::Arc,
+    thread,
+};
 use tari_storage::{
     lmdb_store::{db, LMDBBuilder, LMDBDatabase, LMDBError, LMDBStore},
     IterationResult,
@@ -94,16 +102,15 @@ fn clean_up(name: &str) {
     std::fs::remove_dir_all(get_path(name)).unwrap();
 }
 
-#[cfg(windows)]
-const LINE_ENDING: &str = "\r\n";
-#[cfg(not(windows))]
-const LINE_ENDING: &str = "\n";
-
 fn load_users() -> Vec<User> {
     let mut path = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
     path.push("tests/users.csv");
-    let f = std::fs::read_to_string(path).unwrap();
-    f.split(LINE_ENDING).map(|s| User::new(s).unwrap()).collect()
+    let file = File::open(path).unwrap();
+    BufReader::new(file)
+        .lines() // `BufReader::lines` is platform agnostic, recognises both `\r\n` and `\n`
+        .map(|result| result.unwrap())
+        .map(|s| User::new(&s).unwrap())
+        .collect()
 }
 
 fn insert_all_users(name: &str) -> (Vec<User>, LMDBDatabase) {