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Problem: libzmq does not send ZMTP 3.1 sub/cancel commands

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Solution: if all peers of a socket are >= 3.1 use sub/cancel commands
instead of the old 0/1 messages.
For backward compatibility, move the handling of 0/1 or sub/cancel
command strings to the encoders, so that the right thing can be done
depending on the protocol version.
Do not set the command flag until the encoder, so that we can handle
the inproc case (which skips the encoder).
This commit is contained in:
Luca Boccassi
2018-05-28 19:59:44 +01:00
parent e7f802d1ac
commit 253e9dd27b
16 changed files with 432 additions and 128 deletions
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5
src/msg.hpp
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@@ -54,6 +54,9 @@ namespace zmq
// Note that this structure needs to be explicitly constructed
// (init functions) and destructed (close function).
static const char cancel_cmd_name[] = "\6CANCEL";
static const char sub_cmd_name[] = "\x9SUBSCRIBE";
class msg_t
{
public:
@@ -109,6 +112,8 @@ class msg_t
int init_delimiter ();
int init_join ();
int init_leave ();
int init_subscribe (const size_t size_, const unsigned char *topic);
int init_cancel (const size_t size_, const unsigned char *topic);
int close ();
int move (msg_t &src_);
int copy (msg_t &src_);