write_http plugin: Clear the response buffer before issuing the request.

Previously all responses were concatenated together until the buffer was
full, at which point no additional responses were accessible.

diff --git a/src/write_http.c b/src/write_http.c
index e0b69163d08f26a230ae25edcd7d6c3d9b06656f..a057709781f045f7e2c5fa934ef72bd3ce189212 100644 (file)
--- a/src/write_http.c
+++ b/src/write_http.c
@@ -149,6 +149,7 @@ static void wh_log_http_error(wh_callback_t *cb) {
 static int wh_post(wh_callback_t *cb, char const *data, long size) {
   pthread_mutex_lock(&cb->curl_lock);
 
+  cb->response_buffer_pos = 0;
   curl_easy_setopt(cb->curl, CURLOPT_URL, cb->location);
   curl_easy_setopt(cb->curl, CURLOPT_POSTFIELDSIZE, size);
   curl_easy_setopt(cb->curl, CURLOPT_POSTFIELDS, data);