1 files changed, 15 insertions, 0 deletions
diff --git a/lib/transfer.c b/lib/transfer.c
index a07c7af8c..c7b3596eb 100644
--- a/lib/transfer.c
+++ b/lib/transfer.c
@@ -1531,6 +1531,21 @@ CURLcode Curl_pretransfer(struct Curl_easy *data)
     Curl_http2_init_state(&data->state);
   }
 
+   /*
+   * Set user-agent. Used for HTTP, but since we can attempt to tunnel
+   * basically anything through a http proxy we can't limit this based on
+   * protocol.
+   */
+  if(data->set.str[STRING_USERAGENT]) {
+    Curl_safefree(data->state.aptr.uagent);
+    data->state.aptr.uagent =
+      aprintf("User-Agent: %s\r\n", data->set.str[STRING_USERAGENT]);
+    if(!data->state.aptr.uagent)
+      return CURLE_OUT_OF_MEMORY;
+  }
+
+  data->req.headerbytecount = 0;
+
   return result;
 }