http_recv: Improve error diagnostics.

If the http receiver is started when the stream is stopped or paused,
para_recv exits silently with no error message. Let's tell the user
what is going on.

diff --git a/http_recv.c b/http_recv.c
index c581ebdd093e09cda16b8a08bba3fd4d689a4998..3a723299e78b241a9ac4f44a13caf91651f36b6a 100644 (file)
--- a/http_recv.c
+++ b/http_recv.c
@@ -106,8 +106,10 @@ static int http_recv_post_select(struct sched *s, void *context)
        }
        if (phd->status == HTTP_SENT_GET_REQUEST) {
                ret = read_pattern(rn->fd, HTTP_OK_MSG, strlen(HTTP_OK_MSG), &s->rfds);
-               if (ret < 0)
+               if (ret < 0) {
+                       PARA_ERROR_LOG("did not receive HTTP OK message\n");
                        goto out;
+               }
                if (ret == 0)
                        return 0;
                PARA_INFO_LOG("received ok msg, streaming\n");
@@ -128,8 +130,10 @@ static int http_recv_post_select(struct sched *s, void *context)
                btr_add_output_pool(rn->btrp, num_bytes - iov[0].iov_len, btrn);
        }
 out:
-       if (ret < 0)
+       if (ret < 0) {
+               PARA_NOTICE_LOG("%s\n", para_strerror(-ret));
                btr_remove_node(&rn->btrn);
+       }
        return ret;
 }