diff options
Diffstat (limited to 'apps/netutils/ftpc/ftpc_getfile.c')
| -rw-r--r-- | apps/netutils/ftpc/ftpc_getfile.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/apps/netutils/ftpc/ftpc_getfile.c b/apps/netutils/ftpc/ftpc_getfile.c index 095bf2414..039643d0e 100644 --- a/apps/netutils/ftpc/ftpc_getfile.c +++ b/apps/netutils/ftpc/ftpc_getfile.c @@ -120,7 +120,27 @@ static int ftpc_recvinit(struct ftpc_session_s *session, FAR const char *path, session->rstrsize = offset; } - /* Send the RETR (Retrieve a remote file) command */ + /* Send the RETR (Retrieve a remote file) command. Normally the server + * responds with a mark using code 150: + * + * - "150 File status okay; about to open data connection" + * + * It then stops accepting new connections, attempts to send the contents + * of the file over the data connection, and closes the data connection. + * Finally it either accepts the RETR request with: + * + * - "226 Closing data connection" if the entire file was successfully + * written to the server's TCP buffers + * + * Or rejects the RETR request with: + * + * - "425 Can't open data connection" if no TCP connection was established + * - "426 Connection closed; transfer aborted" if the TCP connection was + * established but then broken by the client or by network failure + * - "451 Requested action aborted: local error in processing" or + * "551 Requested action aborted: page type unknown" if the server had + * trouble reading the file from disk. + */ ret = ftpc_cmd(session, "RETR %s", path); if (ret < 0) |