jolly has uploaded this change for review. ( 
https://gerrit.osmocom.org/c/libosmo-netif/+/36354?usp=email )


Change subject: stream_cli.c: Handle read / recvfrom error and close connection
......................................................................

stream_cli.c: Handle read / recvfrom error and close connection

If read or recvfrom fails or returns 0, the connection must be closed.
This is already done when a write / send fails. In both cases the
disconnect callback is called to notify the user's client.

Not handling the error may cause an infinite loop of read or recvfrom
failures.

Related: OS#6405
Change-Id: I55426de6b49cb4cb0797e50dfeae11f2efc29b15
---
M src/stream_cli.c
1 file changed, 28 insertions(+), 3 deletions(-)



  git pull ssh://gerrit.osmocom.org:29418/libosmo-netif refs/changes/54/36354/1

diff --git a/src/stream_cli.c b/src/stream_cli.c
index fa43a22..4fbde07 100644
--- a/src/stream_cli.c
+++ b/src/stream_cli.c
@@ -449,9 +449,13 @@
                stream_cli_handle_connecting(cli, res);
                break;
        case STREAM_CLI_STATE_CONNECTED:
-               if (res == 0)
+               if (res <= 0) {
+                       LOGSCLI(cli, LOGL_INFO, "received result %d in response 
to read\n", res);
                        osmo_stream_cli_reconnect(cli);
-               else if (cli->iofd_read_cb)
+                       msgb_free(msg);
+                       break;
+               }
+               if (cli->iofd_read_cb)
                        cli->iofd_read_cb(cli, msg);
                else
                        msgb_free(msg);
@@ -500,8 +504,12 @@
                stream_cli_handle_connecting(cli, res);
                break;
        case STREAM_CLI_STATE_CONNECTED:
-               if (res == 0)
+               if (res <= 0) {
+                       LOGSCLI(cli, LOGL_INFO, "received result %d in response 
to recvmsg\n", res);
                        osmo_stream_cli_reconnect(cli);
+                       msgb_free(msg);
+                       break;
+               }
                /* Forward message to read callback, also if the connection 
failed. */
                if (cli->iofd_read_cb)
                        cli->iofd_read_cb(cli, msg);

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Gerrit-Project: libosmo-netif
Gerrit-Branch: master
Gerrit-Change-Id: I55426de6b49cb4cb0797e50dfeae11f2efc29b15
Gerrit-Change-Number: 36354
Gerrit-PatchSet: 1
Gerrit-Owner: jolly <[email protected]>
Gerrit-MessageType: newchange

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