diff --git a/tests/FILEFORMAT.md b/tests/FILEFORMAT.md
index 1c45d15630..bfd5d221e5 100644
--- a/tests/FILEFORMAT.md
+++ b/tests/FILEFORMAT.md
@@ -243,6 +243,9 @@ The connect section is used instead of the 'data' for all CONNECT
 requests. The remainder of the rules for the data section then apply but with
 a connect prefix.
 
+### `<socks>`
+Address type and address details as logged by the SOCKS proxy.
+
 ### `<datacheck [mode="text"] [nonewline="yes"]>`
 if the data is sent but this is what should be checked afterwards. If
 `nonewline=yes` is set, runtests will cut off the trailing newline from the
diff --git a/tests/runtests.pl b/tests/runtests.pl
index 7f3b20c14a..7ac22035b0 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -185,6 +185,7 @@ my $UNITDIR="./unit";
 my $SERVERIN="$LOGDIR/server.input"; # what curl sent the server
 my $SERVER2IN="$LOGDIR/server2.input"; # what curl sent the second server
 my $PROXYIN="$LOGDIR/proxy.input"; # what curl sent the proxy
+my $SOCKSIN="$LOGDIR/socksd-request.log"; # what curl sent to the SOCKS proxy
 my $CURLLOG="commands.log"; # all command lines run
 my $FTPDCMD="$LOGDIR/ftpserver.cmd"; # copy server instructions here
 my $SERVERLOGS_LOCK="$LOGDIR/serverlogs.lock"; # server logs advisor read lock
@@ -4586,6 +4587,17 @@ sub singletest {
     }
     $ok .= ($outputok) ? "o" : "-"; # output checked or not
 
+    # verify SOCKS proxy details
+    my @socksprot = getpart("verify", "socks");
+    if(@socksprot) {
+        # Verify the sent SOCKS proxy details
+        my @out = loadarray($SOCKSIN);
+        $res = compare($testnum, $testname, "socks", \@out, \@socksprot);
+        if($res) {
+            return $errorreturncode;
+        }
+    }
+
     # accept multiple comma-separated error codes
     my @splerr = split(/ *, */, $errorcode);
     my $errok;