tari-project · aviator-app · Dec 2, 2021 · Nov 29, 2021 · Dec 2, 2021
diff --git a/README.md b/README.md
@@ -614,7 +614,7 @@ they are not enabled already:
   ```
   ```
   [base_node.weatherwax]
-  transport = "tor"
+  transpo*_r_*t = "tor"
   allow_test_addresses = false
   grpc_enabled = true
   grpc_base_node_address = "127.0.0.1:18142"
@@ -627,7 +627,14 @@ And then depending on if you are using solo mining or self-select mining you wil
 - For the Tari Merge Mining Proxy, under section **`merge_mining_proxy.weatherwax`**
   ```
   [merge_mining_proxy.weatherwax]
-  monerod_url = "http://monero-stagenet.exan.tech:38081"
+  monerod_url = [ # stagenet
+    "http://stagenet.xmr-tw.org:38081",
+    "http://stagenet.community.xmr.to:38081",
+    "http://monero-stagenet.exan.tech:38081",
+    "http://xmr-lux.boldsuck.org:38081",
+    "http://singapore.node.xmr.pm:38081",
+  ]
+
   proxy_host_address = "127.0.0.1:7878"
   proxy_submit_to_origin = true
   monerod_use_auth = false
@@ -640,7 +647,14 @@ And then depending on if you are using solo mining or self-select mining you wil
 - For the Tari Merge Mining Proxy, under section **`merge_mining_proxy.weatherwax`**
   ```
   [merge_mining_proxy.weatherwax]
-  monerod_url = "http://18.132.124.81:18081"
+  monerod_url = [ # stagenet
+    "http://stagenet.xmr-tw.org:38081",
+    "http://stagenet.community.xmr.to:38081",
+    "http://monero-stagenet.exan.tech:38081",
+    "http://xmr-lux.boldsuck.org:38081",
+    "http://singapore.node.xmr.pm:38081",
+  ]
+
   proxy_host_address = "127.0.0.1:7878"
   proxy_submit_to_origin = false
   monerod_use_auth = false
@@ -651,8 +665,8 @@ And then depending on if you are using solo mining or self-select mining you wil
 **Note:** The ports `7878`, `18142` and `18143` shown in the example above should not be in use by other processes. If
 they are, choose different ports. You will need to update the ports in the steps below as well.
 
-The `monerod_url` must be set to a valid address (`host:port`) for `monerod` that is running Monero mainnet (e.g.
-`http://18.132.124.81:18081`) or stagenet (e.g. `http://monero-stagenet.exan.tech:38081`), which can be a
+The `monerod_url` set must contain valid addresses (`host:port`) for `monerod` that is running Monero mainnet (e.g.
+`["http://18.132.124.81:18081"]`) or stagenet (e.g. `["http://monero-stagenet.exan.tech:38081"]`), which can be a
 [public node hosted by XMR.to](https://community.xmr.to/nodes.html), or to a local instance. To test if the
 `monerod_url` address is working properly, try to paste `host:port/get_height` in an internet browser, for example:
 
@@ -688,7 +702,7 @@ in via the command line upon runtime.
   being a subaddress. It is possible to do with the self-select configuration since the template is requested by the miner
   with the wallet address of the pool.
 
-###### Solo mining
+###### Solo-mining
 
 The [XMRig configuration wizard](https://xmrig.com/wizard) can be used to create a solo mining configuration file
 in JSON format:
@@ -832,8 +846,19 @@ Monero wallet address:
 
 ```
 # URL to monerod
-#monerod_url = "http://18.132.124.81:18081" # mainnet
-monerod_url = "http://monero-stagenet.exan.tech:38081" # stagenet
+  monerod_url = [ # mainnet
+  "http://18.132.124.81:18081",
+  "http://xmr.support:18081",
+  "http://node1.xmr-tw.org:18081",
+  "http://xmr.nthrow.nyc:18081",
+  ]
+  monerod_url = [ # stagenet
+    "http://stagenet.xmr-tw.org:38081",
+    "http://stagenet.community.xmr.to:38081",
+    "http://monero-stagenet.exan.tech:38081",
+    "http://xmr-lux.boldsuck.org:38081",
+    "http://singapore.node.xmr.pm:38081",
+  ]
 ```
 
 ###### Runtime
@@ -891,8 +916,12 @@ The `monerod_url` field in the `config.toml` should be enabled for the mainnet v
 
 ```
 # URL to monerod
-monerod_url = "http://18.132.124.81:18081" # mainnet
-#monerod_url = "http://monero-stagenet.exan.tech:38081" # stagenet
+  monerod_url = [ # mainnet
+  "http://18.132.124.81:18081",
+  "http://xmr.support:18081",
+  "http://node1.xmr-tw.org:18081",
+  "http://xmr.nthrow.nyc:18081",
+  ]
 ```
 
 ###### Runtime

diff --git a/applications/launchpad/docker_rig/docker-compose.yml b/applications/launchpad/docker_rig/docker-compose.yml
@@ -159,7 +159,7 @@ services:
       TARI_NETWORK: ${TARI_NETWORK}
       TARI_BASE_NODE__WEATHERWAX__GRPC_BASE_NODE_ADDRESS: "/dns4/base_node/tcp/18142"
       TARI_WALLET__GRPC_ADDRESS: "/dns4/wallet/tcp/18143"
-      TARI_MERGE_MINING_PROXY__WEATHERWAX__MONEROD_URL: ${TARI_MONEROD_URL:-http://monero-stagenet.exan.tech:38081}
+      TARI_MERGE_MINING_PROXY__WEATHERWAX__MONEROD_URL: ${TARI_MONEROD_URL:-["http://stagenet.community.xmr.to:38081","http://monero-stagenet.exan.tech:38081","http://stagenet.xmr-tw.org:38081","http://xmr-lux.boldsuck.org:38081","http://singapore.node.xmr.pm:38081"]}
       TARI_MERGE_MINING_PROXY__WEATHERWAX__MONEROD_USERNAME: ${TARI_MONEROD_USERNAME}
       TARI_MERGE_MINING_PROXY__WEATHERWAX__MONEROD_PASSWORD: ${TARI_MONEROD_PASSWORD}
       TARI_MERGE_MINING_PROXY__WEATHERWAX__MONEROD_USE_AUTH: ${TARI_MONEROD_USE_AUTH:-0}
@@ -179,6 +179,3 @@ volumes:
   # `docker run --rm -v $(pwd):/backup -v blockchain:/blockchain ubuntu tar czvf /backup/backup.tar.gz /blockchain`
   blockchain:
   monero-blockchain:
-
-
-
diff --git a/applications/tari_merge_mining_proxy/src/error.rs b/applications/tari_merge_mining_proxy/src/error.rs
@@ -79,6 +79,8 @@ pub enum MmProxyError {
     InvalidHeaderValue(#[from] InvalidHeaderValue),
     #[error("Block was lost due to a failed precondition, and should be retried")]
     FailedPreconditionBlockLostRetry,
+    #[error("No reachable servers in configuration")]
+    ServersUnavailable,
 }
 
 impl From<tonic::Status> for MmProxyError {

diff --git a/applications/tari_merge_mining_proxy/src/proxy.rs b/applications/tari_merge_mining_proxy/src/proxy.rs
@@ -41,6 +41,7 @@ use std::{
     sync::{
         atomic::{AtomicBool, Ordering},
         Arc,
+        RwLock,
     },
     task::{Context, Poll},
     time::Instant,
@@ -61,7 +62,7 @@ const TARI_CHAIN_ID: &str = "xtr";
 #[derive(Debug, Clone)]
 pub struct MergeMiningProxyConfig {
     pub network: Network,
-    pub monerod_url: String,
+    pub monerod_url: Vec<String>,
     pub monerod_username: String,
     pub monerod_password: String,
     pub monerod_use_auth: bool,
@@ -114,6 +115,7 @@ impl MergeMiningProxyService {
                 base_node_client,
                 wallet_client,
                 initial_sync_achieved: Arc::new(AtomicBool::new(false)),
+                last_available_server: Arc::new(RwLock::new(None)),
             },
         }
     }
@@ -135,7 +137,7 @@ impl Service<Request<Body>> for MergeMiningProxyService {
             let bytes = match proxy::read_body_until_end(request.body_mut()).await {
                 Ok(b) => b,
                 Err(err) => {
-                    eprintln!("Method: Unknown, Failed to read request: {}", err);
+                    eprintln!("Method: Unknown, Failed to read request: {:?}", err);
                     let resp = proxy::json_response(
                         StatusCode::BAD_REQUEST,
                         &json_rpc::standard_error_response(
@@ -153,8 +155,8 @@ impl Service<Request<Body>> for MergeMiningProxyService {
             match inner.handle(&method_name, request).await {
                 Ok(resp) => Ok(resp),
                 Err(err) => {
-                    error!(target: LOG_TARGET, "Error handling request: {}", err);
-                    eprintln!("Method: {}, Failed to handle request: {}", method_name, err);
+                    error!(target: LOG_TARGET, "Error handling request: {:?}", err);
+                    eprintln!("Method: {}, Failed to handle request: {:?}", method_name, err);
                     Ok(proxy::json_response(
                         StatusCode::INTERNAL_SERVER_ERROR,
                         &json_rpc::standard_error_response(
@@ -180,6 +182,7 @@ struct InnerService {
     base_node_client: grpc::base_node_client::BaseNodeClient<tonic::transport::Channel>,
     wallet_client: grpc::wallet_client::WalletClient<tonic::transport::Channel>,
     initial_sync_achieved: Arc<AtomicBool>,
+    last_available_server: Arc<RwLock<Option<String>>>,
 }
 
 impl InnerService {
@@ -582,17 +585,44 @@ impl InnerService {
         Ok(proxy::into_response(parts, &resp))
     }
 
-    fn get_fully_qualified_monerod_url(&self, uri: &Uri) -> Result<Url, MmProxyError> {
-        let uri = format!("{}{}", self.config.monerod_url, uri.path()).parse::<Url>()?;
-        Ok(uri)
+    async fn get_fully_qualified_monerod_url(&self, uri: &Uri) -> Result<Url, MmProxyError> {
+        {
+            let lock = self
+                .last_available_server
+                .read()
+                .expect("Read lock should not fail")
+                .clone();
+            if let Some(server) = lock {
+                let uri = format!("{}{}", server, uri.path()).parse::<Url>()?;
+                return Ok(uri);
+            }
+        }
+
+        for monerod_url in self.config.monerod_url.iter() {
+            let uri = format!("{}{}", monerod_url, uri.path()).parse::<Url>()?;
+            match reqwest::get(uri.clone()).await {
+                Ok(_) => {
+                    let mut lock = self.last_available_server.write().expect("Write lock should not fail");
+                    *lock = Some(monerod_url.to_string());
+                    info!(target: LOG_TARGET, "Monerod server available: {:?}", uri.clone());
+                    return Ok(uri);
+                },
+                Err(_) => {
+                    warn!(target: LOG_TARGET, "Monerod server unavailable: {:?}", uri);
+                    continue;
+                },
+            }
+        }
+
+        Err(MmProxyError::ServersUnavailable)
     }
 
     /// Proxy a request received by this server to Monerod
     async fn proxy_request_to_monerod(
         &self,
         request: Request<Bytes>,
     ) -> Result<(Request<Bytes>, Response<json::Value>), MmProxyError> {
-        let monerod_uri = self.get_fully_qualified_monerod_url(request.uri())?;
+        let monerod_uri = self.get_fully_qualified_monerod_url(request.uri()).await?;
 
         let mut headers = request.headers().clone();
         // Some public monerod setups (e.g. those that are reverse proxied by nginx) require the Host header.
@@ -744,34 +774,43 @@ impl InnerService {
                 .join(","),
         );
 
-        let (request, monerod_resp) = self.proxy_request_to_monerod(request).await?;
-        // Any failed (!= 200 OK) responses from Monero are immediately returned to the requester
-        let monerod_status = monerod_resp.status();
-        if !monerod_status.is_success() {
-            // we dont break on xmrig returned error.
-            warn!(
-                target: LOG_TARGET,
-                "Monerod returned an error: {}",
-                monerod_resp.status()
-            );
-            println!(
-                "Method: {}, MoneroD Status: {}, Proxy Status: N/A, Response Time: {}ms",
-                method_name,
-                monerod_status,
-                start.elapsed().as_millis()
-            );
-            return Ok(monerod_resp.map(|json| json.to_string().into()));
-        }
+        match self.proxy_request_to_monerod(request).await {
+            Ok((request, monerod_resp)) => {
+                // Any failed (!= 200 OK) responses from Monero are immediately returned to the requester
+                let monerod_status = monerod_resp.status();
+                if !monerod_status.is_success() {
+                    // we dont break on monerod returning an error code.
+                    warn!(
+                        target: LOG_TARGET,
+                        "Monerod returned an error: {}",
+                        monerod_resp.status()
+                    );
+                    println!(
+                        "Method: {}, MoneroD Status: {}, Proxy Status: N/A, Response Time: {}ms",
+                        method_name,
+                        monerod_status,
+                        start.elapsed().as_millis()
+                    );
+                    return Ok(monerod_resp.map(|json| json.to_string().into()));
+                }
 
-        let response = self.get_proxy_response(request, monerod_resp).await?;
-        println!(
-            "Method: {}, MoneroD Status: {}, Proxy Status: {}, Response Time: {}ms",
-            method_name,
-            monerod_status,
-            response.status(),
-            start.elapsed().as_millis()
-        );
-        Ok(response)
+                let response = self.get_proxy_response(request, monerod_resp).await?;
+                println!(
+                    "Method: {}, MoneroD Status: {}, Proxy Status: {}, Response Time: {}ms",
+                    method_name,
+                    monerod_status,
+                    response.status(),
+                    start.elapsed().as_millis()
+                );
+                Ok(response)
+            },
+            Err(e) => {
+                // Monero Server encountered a problem processing the request, reset the last_available_server
+                let mut lock = self.last_available_server.write().expect("Write lock should not fail");
+                *lock = None;
+                Err(e)
+            },
+        }
     }
 }
 

diff --git a/common/config/presets/merge_mining_proxy.toml b/common/config/presets/merge_mining_proxy.toml
@@ -7,10 +7,19 @@
 [merge_mining_proxy.weatherwax]
 
 # URL to monerod
-monerod_url = "http://monero-stagenet.exan.tech:38081"  # stagenet
-#monerod_url = "http://18.133.59.45:28081"               # testnet
-#monerod_url = "http://18.132.124.81:18081"              # mainnet
-#monerod_url = "http://monero.exan.tech:18081"           # mainnet alternative
+monerod_url = [ # stagenet
+    "http://stagenet.xmr-tw.org:38081",
+    "http://stagenet.community.xmr.to:38081",
+    "http://monero-stagenet.exan.tech:38081",
+    "http://xmr-lux.boldsuck.org:38081",
+    "http://singapore.node.xmr.pm:38081",
+]
+#monerod_url = [ # mainnet
+#    "http://18.132.124.81:18081",
+#    "http://xmr.support:18081",
+#    "http://node1.xmr-tw.org:18081",
+#    "http://xmr.nthrow.nyc:18081",
+#]
 
 # Address of the tari_merge_mining_proxy application
 proxy_host_address = "127.0.0.1:7878"

diff --git a/common/src/configuration/global.rs b/common/src/configuration/global.rs
@@ -121,7 +121,7 @@ pub struct GlobalConfig {
     pub wallet_base_node_service_request_max_age: u64,
     pub wallet_balance_enquiry_cooldown_period: u64,
     pub prevent_fee_gt_amount: bool,
-    pub monerod_url: String,
+    pub monerod_url: Vec<String>,
     pub monerod_username: String,
     pub monerod_password: String,
     pub monerod_use_auth: bool,
@@ -613,9 +613,25 @@ fn convert_node_config(
     );
 
     let key = config_string("merge_mining_proxy", net_str, "monerod_url");
-    let monerod_url = cfg
-        .get_str(&key)
-        .map_err(|e| ConfigurationError::new(&key, &e.to_string()))?;
+    let mut monerod_url: Vec<String> = cfg
+        .get_array(&key)
+        .unwrap_or_default()
+        .into_iter()
+        .map(|v| {
+            v.into_str()
+                .map_err(|err| ConfigurationError::new(&key, &err.to_string()))
+        })
+        .collect::<Result<_, _>>()?;
+
+    // default to stagenet on empty
+    if monerod_url.is_empty() {
+        monerod_url = vec![
+            "http://stagenet.xmr-tw.org:38081".to_string(),
+            "http://singapore.node.xmr.pm:38081".to_string(),
+            "http://xmr-lux.boldsuck.org:38081".to_string(),
+            "http://monero-stagenet.exan.tech:38081".to_string(),
+        ];
+    }
 
     let key = config_string("merge_mining_proxy", net_str, "monerod_use_auth");
     let monerod_use_auth = cfg

diff --git a/integration_tests/helpers/config.js b/integration_tests/helpers/config.js
@@ -90,8 +90,13 @@ function baseEnvs(peerSeeds = [], forceSyncPeers = []) {
     TARI_BASE_NODE__LOCALNET__MAX_RANDOMX_VMS: "1",
     TARI_BASE_NODE__LOCALNET__AUTO_PING_INTERVAL: "15",
     TARI_BASE_NODE__LOCALNET__FLOOD_BAN_MAX_MSG_COUNT: "100000",
-    TARI_MERGE_MINING_PROXY__LOCALNET__MONEROD_URL:
+    TARI_MERGE_MINING_PROXY__LOCALNET__MONEROD_URL: [
+      "http://stagenet.xmr-tw.org:38081",
+      "http://stagenet.community.xmr.to:38081",
       "http://monero-stagenet.exan.tech:38081",
+      "http://xmr-lux.boldsuck.org:38081",
+      "http://singapore.node.xmr.pm:38081",
+    ],
     TARI_MERGE_MINING_PROXY__LOCALNET__MONEROD_USE_AUTH: false,
     TARI_MERGE_MINING_PROXY__LOCALNET__MONEROD_USERNAME: '""',
     TARI_MERGE_MINING_PROXY__LOCALNET__MONEROD_PASSWORD: '""',