net: extend Sock::Wait() to report a timeout

Previously `Sock::Wait()` would not have signaled to the caller whether
a timeout or one of the requested events occurred since that was not
needed by any of the callers.

Such functionality will be needed in the I2P implementation, thus extend
the `Sock::Wait()` method.

1 files changed, 6 insertions, 1 deletions

diff --git a/src/util/sock.h b/src/util/sock.h
index 23c3c35dad..2d9cac14af 100644
--- a/src/util/sock.h
+++ b/src/util/sock.h
@@ -105,9 +105,14 @@ public:
      * Wait for readiness for input (recv) or output (send).
      * @param[in] timeout Wait this much for at least one of the requested events to occur.
      * @param[in] requested Wait for those events, bitwise-or of `RECV` and `SEND`.
+     * @param[out] occurred If not nullptr and `true` is returned, then upon return this
+     * indicates which of the requested events occurred. A timeout is indicated by return
+     * value of `true` and `occurred` being set to 0.
      * @return true on success and false otherwise
      */
-    virtual bool Wait(std::chrono::milliseconds timeout, Event requested) const;
+    virtual bool Wait(std::chrono::milliseconds timeout,
+                      Event requested,
+                      Event* occurred = nullptr) const;
 
 private:
     /**