dnsdist: Better reporting of syscall errors via OpenSSL's libssl

diff --git a/pdns/dnsdistdist/tcpiohandler.cc b/pdns/dnsdistdist/tcpiohandler.cc
index 9d44f0dba7c9169f76840dc46fe6a8a9ba86ee1f..4b4fc5919413263b471427c2237e947e6b8722c3 100644 (file)
--- a/pdns/dnsdistdist/tcpiohandler.cc
+++ b/pdns/dnsdistdist/tcpiohandler.cc
@@ -258,6 +258,9 @@ public:
     else if (error == SSL_ERROR_WANT_WRITE) {
       return IOState::NeedWrite;
     }
+    else if (error == SSL_ERROR_SYSCALL) {
+      throw std::runtime_error("Error while processing TLS connection:" + std::string(strerror(errno)));
+    }
     else {
       throw std::runtime_error("Error while processing TLS connection:" + std::to_string(error));
     }