Merge bitcoin/bitcoin#28240: refactor: Remove unused boost signals2 from torcontrol

faaba770e1 Sort includes in compat.h (MarcoFalke)
fa91a23d63 remove unused limits.h include in compat.h (MarcoFalke)
fa32af22b3 Replace LocaleIndependentAtoi with ToIntegral (MarcoFalke)
faab76c1c0 iwyu on torcontrol (MarcoFalke)
fa0a60dd93 Remove unused boost signals2 from torcontrol (MarcoFalke)

Pull request description:

  Remove unused boost, and other includes, and other legacy functions from torcontrol.

ACKs for top commit:
  TheCharlatan:
    Re-ACK faaba770e1
  achow101:
    ACK faaba770e1
  dergoegge:
    utACK faaba770e1

Tree-SHA512: 440f8d3ae9c3cf4dcc368e35b29459b5fcec8c6d233e8f9be3a854e7624b8633d6ccdde10cb0c6f74f86278e06557c4e9e24de30c3c692826237939265c6160a

src/compat/compat.h

@@ -22,19 +22,18 @@
 #include <ws2tcpip.h>
 #include <cstdint>
 #else
-#include <fcntl.h>
-#include <sys/mman.h>
-#include <sys/select.h>
-#include <sys/socket.h>
-#include <sys/types.h>
-#include <net/if.h>
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <arpa/inet.h>
-#include <ifaddrs.h>
-#include <limits.h>
-#include <netdb.h>
-#include <unistd.h>
+#include <arpa/inet.h>   // IWYU pragma: export
+#include <fcntl.h>       // IWYU pragma: export
+#include <ifaddrs.h>     // IWYU pragma: export
+#include <net/if.h>      // IWYU pragma: export
+#include <netdb.h>       // IWYU pragma: export
+#include <netinet/in.h>  // IWYU pragma: export
+#include <netinet/tcp.h> // IWYU pragma: export
+#include <sys/mman.h>    // IWYU pragma: export
+#include <sys/select.h>  // IWYU pragma: export
+#include <sys/socket.h>  // IWYU pragma: export
+#include <sys/types.h>   // IWYU pragma: export
+#include <unistd.h>      // IWYU pragma: export
 #endif
 
 // We map Linux / BSD error functions and codes, to the equivalent

src/torcontrol.cpp

@@ -14,14 +14,26 @@
 #include <net.h>
 #include <netaddress.h>
 #include <netbase.h>
+#include <random.h>
+#include <tinyformat.h>
+#include <util/check.h>
+#include <util/fs.h>
 #include <util/readwritefile.h>
 #include <util/strencodings.h>
+#include <util/string.h>
 #include <util/thread.h>
 #include <util/time.h>
 
+#include <algorithm>
+#include <cassert>
+#include <cstdlib>
 #include <deque>
 #include <functional>
+#include <map>
+#include <optional>
 #include <set>
+#include <thread>
+#include <utility>
 #include <vector>
 
 #include <event2/buffer.h>
@@ -79,15 +91,15 @@ void TorControlConnection::readcb(struct bufferevent *bev, void *ctx)
         if (s.size() < 4) // Short line
             continue;
         // <status>(-|+| )<data><CRLF>
-        self->message.code = LocaleIndependentAtoi<int>(s.substr(0,3));
+        self->message.code = ToIntegral<int>(s.substr(0, 3)).value_or(0);
         self->message.lines.push_back(s.substr(4));
         char ch = s[3]; // '-','+' or ' '
         if (ch == ' ') {
             // Final line, dispatch reply and clean up
             if (self->message.code >= 600) {
+                // (currently unused)
                 // Dispatch async notifications to async handler
                 // Synchronous and asynchronous messages are never interleaved
-                self->async_handler(*self, self->message);
             } else {
                 if (!self->reply_handlers.empty()) {
                     // Invoke reply handler with message

src/torcontrol.h

@@ -11,19 +11,14 @@
 #include <netaddress.h>
 #include <util/fs.h>
 
-#include <boost/signals2/signal.hpp>
+#include <event2/util.h>
 
-#include <event2/bufferevent.h>
-#include <event2/event.h>
-
-#include <cstdlib>
+#include <cstdint>
 #include <deque>
 #include <functional>
 #include <string>
 #include <vector>
 
-class CService;
-
 extern const std::string DEFAULT_TOR_CONTROL;
 static const bool DEFAULT_LISTEN_ONION = true;
 
@@ -83,8 +78,6 @@ public:
      */
     bool Command(const std::string &cmd, const ReplyHandlerCB& reply_handler);
 
-    /** Response handlers for async replies */
-    boost::signals2::signal<void(TorControlConnection &,const TorControlReply &)> async_handler;
 private:
     /** Callback when ready for use */
     std::function<void(TorControlConnection&)> connected;