From 8b3159ef0a912da67c545a3d24f4558f8df866e4 Mon Sep 17 00:00:00 2001
From: Cory Fields <cory-nospam-@coryfields.com>
Date: Tue, 27 Dec 2016 17:13:31 -0500
Subject: [PATCH] net: make proxy receives interruptible

---
 src/net.cpp     |  2 ++
 src/netbase.cpp | 12 ++++++++++--
 src/netbase.h   |  1 +
 3 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/src/net.cpp b/src/net.cpp
index bbfada430..7e16e2382 100644
--- a/src/net.cpp
+++ b/src/net.cpp
@@ -2157,6 +2157,7 @@ bool CConnman::Start(CScheduler& scheduler, std::string& strNodeError, Options c
     //
     // Start threads
     //
+    InterruptSocks5(false);
     interruptNet.reset();
     flagInterruptMsgProc = false;
 
@@ -2208,6 +2209,7 @@ void CConnman::Interrupt()
     condMsgProc.notify_all();
 
     interruptNet();
+    InterruptSocks5(true);
 
     if (semOutbound)
         for (int i=0; i<(nMaxOutbound + nMaxFeeler); i++)
diff --git a/src/netbase.cpp b/src/netbase.cpp
index da94fd4d1..87c7abd7c 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -19,6 +19,7 @@
 #ifdef HAVE_GETADDRINFO_A
 #include <netdb.h>
 #endif
+#include <atomic>
 
 #ifndef WIN32
 #if HAVE_INET_PTON
@@ -44,6 +45,7 @@ bool fNameLookup = DEFAULT_NAME_LOOKUP;
 
 // Need ample time for negotiation for very slow proxies such as Tor (milliseconds)
 static const int SOCKS5_RECV_TIMEOUT = 20 * 1000;
+static std::atomic<bool> interruptSocks5Recv(false);
 
 enum Network ParseNetwork(std::string net) {
     boost::to_lower(net);
@@ -206,7 +208,7 @@ struct timeval MillisToTimeval(int64_t nTimeout)
 /**
  * Read bytes from socket. This will either read the full number of bytes requested
  * or return False on error or timeout.
- * This function can be interrupted by boost thread interrupt.
+ * This function can be interrupted by calling InterruptSocks5()
  *
  * @param data Buffer to receive into
  * @param len  Length of data to receive
@@ -246,7 +248,8 @@ bool static InterruptibleRecv(char* data, size_t len, int timeout, SOCKET& hSock
                 return false;
             }
         }
-        boost::this_thread::interruption_point();
+        if (interruptSocks5Recv)
+            return false;
         curTime = GetTimeMillis();
     }
     return len == 0;
@@ -715,3 +718,8 @@ bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking)
 
     return true;
 }
+
+void InterruptSocks5(bool interrupt)
+{
+    interruptSocks5Recv = interrupt;
+}
diff --git a/src/netbase.h b/src/netbase.h
index eb39d1657..9ff8102bd 100644
--- a/src/netbase.h
+++ b/src/netbase.h
@@ -63,5 +63,6 @@ bool SetSocketNonBlocking(SOCKET& hSocket, bool fNonBlocking);
  * Convert milliseconds to a struct timeval for e.g. select.
  */
 struct timeval MillisToTimeval(int64_t nTimeout);
+void InterruptSocks5(bool interrupt);
 
 #endif // BITCOIN_NETBASE_H