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-rw-r--r--docs/libcurl/curl_easy_setopt.35
1 files changed, 4 insertions, 1 deletions
diff --git a/docs/libcurl/curl_easy_setopt.3 b/docs/libcurl/curl_easy_setopt.3
index a94f40fcc..56a54a9db 100644
--- a/docs/libcurl/curl_easy_setopt.3
+++ b/docs/libcurl/curl_easy_setopt.3
@@ -2088,7 +2088,10 @@ behavior on host and key (mis)matching. (Added in 7.19.6)
.IP CURLOPT_SSH_KEYFUNCTION
Pass a pointer to a curl_sshkeycallback function. It gets called when the
known_host matching has been done, to allow the application to act and decide
-for libcurl how to proceed. It gets passed the CURL handle, the key from the
+for libcurl how to proceed. The callback will only be called if
+\fICURLOPT_SSH_KNOWNHOSTS\fP is also set.
+
+The curl_sshkeycallback function gets passed the CURL handle, the key from the
known_hosts file, the key from the remote site, info from libcurl on the
matching status and a custom pointer (set with \fICURLOPT_SSH_KEYDATA\fP). It
MUST return one of the following return codes to tell libcurl how to act: