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| WSLAY_EVENT_QUEUE_MSG(3) | wslay | WSLAY_EVENT_QUEUE_MSG(3) |
NAME¶
wslay_event_queue_msg - Queue a message for future transmission
SYNOPSIS¶
#include <wslay/wslay.h>
DESCRIPTION¶
wslay_event_queue_msg() and wslay_event_queue_msg_ex() queue message specified in arg. The struct wslay_event_msg is defined as:
struct wslay_event_msg {
uint8_t opcode;
const uint8_t *msg;
size_t msg_length;
};
The opcode member is opcode of the message. The msg member is the pointer to the message data. The msg_length member is the length of message data.
This function supports both control and non-control messages and the given message is sent without fragmentation. If fragmentation is needed, use wslay_event_queue_fragmented_msg() <#c.wslay_event_queue_fragmented_msg> function instead.
This function makes a copy of msg of length msg_length.
This function just queues a message and does not send it. wslay_event_send() <#c.wslay_event_send> function call sends these queued messages.
wslay_event_queue_msg_ex() additionally accepts rsv parameter, which is a reserved bits to send. To set reserved bits, use macro WSLAY_RSV1_BIT, WSLAY_RSV2_BIT, and WSLAY_RSV3_BIT. See wslay_event_config_set_allowed_rsv_bits() <#c.wslay_event_config_set_allowed_rsv_bits> to see the allowed reserved bits to set.
RETURN VALUE¶
wslay_event_queue_msg() and wslay_event_queue_msg_ex() return 0 if it succeeds, or returns the following negative error codes:
- WSLAY_ERR_NO_MORE_MSG
- Could not queue given message. The one of possible reason is that close control frame has been queued/sent and no further queueing message is not allowed.
- WSLAY_ERR_INVALID_ARGUMENT
- The given message is invalid; or RSV1 is set for control frame; or bit is set in rsv which is not allowed (see wslay_event_config_set_allowed_rsv_bits() <#c.wslay_event_config_set_allowed_rsv_bits>).
- WSLAY_ERR_NOMEM
- Out of memory.
SEE ALSO¶
wslay_event_queue_fragmented_msg() <#c.wslay_event_queue_fragmented_msg>, wslay_event_queue_fragmented_msg_ex() <#c.wslay_event_queue_fragmented_msg_ex>, wslay_event_queue_close() <#c.wslay_event_queue_close>
Author¶
Tatsuhiro Tsujikawa
Copyright¶
2012, 2015, Tatsuhiro Tsujikawa
| July 9, 2021 | 1.1.1 |