From b40d94641d85732d3cdd6cd3d3871b00005f3859 Mon Sep 17 00:00:00 2001
From: Sofiane Baltaci <baltaci.sofiane@gmail.com>
Date: Sat, 21 Dec 2019 02:39:30 +0100
Subject: [PATCH] Add bip157 NODE_COMPACT_FILTERS Service Flag

---
 src/network/constants.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/network/constants.rs b/src/network/constants.rs
index 37ba835c..bcf522b0 100644
--- a/src/network/constants.rs
+++ b/src/network/constants.rs
@@ -125,6 +125,10 @@ impl ServiceFlags {
     /// WITNESS indicates that a node can be asked for blocks and transactions including witness
     /// data.
     pub const WITNESS: ServiceFlags = ServiceFlags(1 << 3);
+    
+    /// COMPACT_FILTERS means the node will service basic block filter requests.
+    /// See BIP157 and BIP158 for details on how this is implemented.
+    pub const COMPACT_FILTERS: ServiceFlags = ServiceFlags(1 << 6);
 
     /// NETWORK_LIMITED means the same as NODE_NETWORK with the limitation of only serving the last
     /// 288 (2 day) blocks.
@@ -319,6 +323,7 @@ mod tests {
             ServiceFlags::GETUTXO,
             ServiceFlags::BLOOM,
             ServiceFlags::WITNESS,
+            ServiceFlags::COMPACT_FILTERS,
             ServiceFlags::NETWORK_LIMITED,
         ];
 
@@ -337,6 +342,10 @@ mod tests {
 
         flags2 ^= ServiceFlags::WITNESS;
         assert_eq!(flags2, ServiceFlags::GETUTXO);
+        
+        flags2 |= ServiceFlags::COMPACT_FILTERS;
+        flags2 ^= ServiceFlags::GETUTXO;
+        assert_eq!(flags2, ServiceFlags::COMPACT_FILTERS);
 
         // Test formatting.
         assert_eq!("ServiceFlags(NONE)", ServiceFlags::NONE.to_string());