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Allow for transferer to retry when dialing an invalid extension.

Browse Source 
This allows for a configurable number of attempts for a transferer
to dial an extension to transfer the call to. For Asterisk 13, the
default values are such that upgrading between versions will not
cause a behaivour change. For trunk, though, the defaults will be
changed to be more user-friendly.

Review: https://reviewboard.asterisk.org/r/4167



git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@428145 65c4cc65-6c06-0410-ace0-fbb531ad65f3
changes/97/197/1
Mark Michelson 11 years ago
parent e8286df19c
commit a1f1cdbd87
5 changed files with 105 additions and 16 deletions
Show Stats Download Patch File Download Diff File

13
CHANGES
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@ -7,6 +7,19 @@
=== and the other UPGRADE files for older releases.
===
==============================================================================
------------------------------------------------------------------------------
--- Functionality changes from Asterisk 13.0.0 to Asterisk 13.1.0 ------------
------------------------------------------------------------------------------
Transfers
-----------------
The features.conf general section has three new configurable options:
* transferdialattempts
* transferretrysound
* transferinvalidsound
For more information on what these options do, see the Asterisk wiki:
https://wiki.asterisk.org/wiki/x/W4fAAQ
------------------------------------------------------------------------------
--- Functionality changes from Asterisk 12 to Asterisk 13 --------------------

4
configs/samples/features.conf.sample
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@ -24,6 +24,10 @@
;atxferloopdelay = 10 ; Number of seconds to sleep between retries (if atxferdropcall = no)
;atxfercallbackretries = 2 ; Number of times to attempt to send the call back to the transferer.
; By default, this is 2.
;transferdialattempts = 3 ; Number of times that a transferer may attempt to dial an extension before
; being kicked back to the original call.
;transferretrysound = "beep" ; Sound to play when a transferer fails to dial a valid extension.
;transferinvalidsound = "beeperr" ; Sound to play when a transferer fails to dial a valid extension and is out of retries.
; Note that the DTMF features listed below only work when two channels have answered and are bridged together.

6
include/asterisk/features_config.h
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@ -68,6 +68,10 @@ struct ast_features_xfer_config {
AST_STRING_FIELD(atxferthreeway);
/*! DTMF sequence used to swap which party the transferer is talking to */
AST_STRING_FIELD(atxferswap);
/*! Sound played when an invalid extension is dialed, and the transferer should retry. */
AST_STRING_FIELD(transferretrysound);
/*! Sound played when an invalid extension is dialed, and the transferer is being returned to the call. */
AST_STRING_FIELD(transferinvalidsound);
);
/*! Seconds allowed between digit presses when dialing transfer destination */
unsigned int transferdigittimeout;
@ -79,6 +83,8 @@ struct ast_features_xfer_config {
unsigned int atxfercallbackretries;
/*! Determines if the call is dropped on attended transfer failure */
unsigned int atxferdropcall;
/*! Number of dial attempts allowed for blind/attended transfers */
unsigned int transferdialattempts;
};
/*!

64
main/bridge_basic.c
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@ -47,6 +47,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/stasis_bridges.h"
#include "asterisk/features.h"
#include "asterisk/format_cache.h"
#include "asterisk/test.h"
#define NORMAL_FLAGS (AST_BRIDGE_FLAG_DISSOLVE_HANGUP | AST_BRIDGE_FLAG_DISSOLVE_EMPTY \
| AST_BRIDGE_FLAG_SMART)
@ -2977,7 +2978,11 @@ static int grab_transfer(struct ast_channel *chan, char *exten, size_t exten_len
{
int res;
int digit_timeout;
int attempts = 0;
int max_attempts;
RAII_VAR(struct ast_features_xfer_config *, xfer_cfg, NULL, ao2_cleanup);
char *retry_sound;
char *invalid_sound;
ast_channel_lock(chan);
xfer_cfg = ast_get_chan_features_xfer_config(chan);
@ -2987,6 +2992,9 @@ static int grab_transfer(struct ast_channel *chan, char *exten, size_t exten_len
return -1;
}
digit_timeout = xfer_cfg->transferdigittimeout * 1000;
max_attempts = xfer_cfg->transferdialattempts;
retry_sound = ast_strdupa(xfer_cfg->transferretrysound);
invalid_sound = ast_strdupa(xfer_cfg->transferinvalidsound);
ast_channel_unlock(chan);
/* Play the simple "transfer" prompt out and wait */
@ -3002,24 +3010,48 @@ static int grab_transfer(struct ast_channel *chan, char *exten, size_t exten_len
}
/* Drop to dialtone so they can enter the extension they want to transfer to */
res = ast_app_dtget(chan, context, exten, exten_len, exten_len - 1, digit_timeout);
if (res < 0) {
/* Hangup or error */
res = -1;
} else if (!res) {
/* 0 for invalid extension dialed. */
if (ast_strlen_zero(exten)) {
ast_debug(1, "%s dialed no digits.\n", ast_channel_name(chan));
do {
++attempts;
memset(exten, 0, exten_len);
ast_test_suite_event_notify("TRANSFER_BEGIN_DIAL",
"Channel: %s\r\n"
"Attempt: %d",
ast_channel_name(chan), attempts);
res = ast_app_dtget(chan, context, exten, exten_len, exten_len - 1, digit_timeout);
if (res < 0) {
/* Hangup or error */
res = -1;
} else if (!res) {
/* 0 for invalid extension dialed. */
if (ast_strlen_zero(exten)) {
ast_debug(1, "%s dialed no digits.\n", ast_channel_name(chan));
} else {
ast_debug(1, "%s dialed '%s@%s' does not exist.\n",
ast_channel_name(chan), exten, context);
}
if (attempts < max_attempts) {
ast_stream_and_wait(chan, retry_sound, AST_DIGIT_NONE);
} else {
ast_stream_and_wait(chan, invalid_sound, AST_DIGIT_NONE);
}
res = -1;
} else {
ast_debug(1, "%s dialed '%s@%s' does not exist.\n",
ast_channel_name(chan), exten, context);
/* Dialed extension is valid. */
res = 0;
}
ast_stream_and_wait(chan, "pbx-invalid", AST_DIGIT_NONE);
res = -1;
} else {
/* Dialed extension is valid. */
res = 0;
}
ast_test_suite_event_notify("TRANSFER_DIALLED",
"Channel: %s\r\n"
"Attempt: %d\r\n"
"Dialled: %s\r\n"
"Result: %s",
ast_channel_name(chan), attempts, exten, res == 0 ? "Success" : "Failure");
} while (res < 0 && attempts < max_attempts);
ast_test_suite_event_notify("TRANSFER_DIAL_FINAL",
"Channel: %s\r\n"
"Result: %s",
ast_channel_name(chan), res == 0 ? "Success" : "Failure");
return res;
}

34
main/features_config.c
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@ -132,6 +132,15 @@
<configOption name="pickupfailsound">
<synopsis>Sound to play to picker when a call cannot be picked up</synopsis>
</configOption>
<configOption name="transferdialattempts" default="3">
<synopsis>Number of dial attempts allowed when attempting a transfer</synopsis>
</configOption>
<configOption name="transferretrysound" default="pbx-invalid">
<synopsis>Sound that is played when an incorrect extension is dialed and the transferer should try again.</synopsis>
</configOption>
<configOption name="transferinvalidsound" default="privacy-incorrect">
<synopsis>Sound that is played when an incorrect extension is dialed and the transferer has no attempts remaining.</synopsis>
</configOption>
</configObject>
<configObject name="featuremap">
<synopsis>DTMF options that can be triggered during bridged calls</synopsis>
@ -306,6 +315,9 @@
<enum name="pickupfailsound"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='pickupfailsound']/synopsis/text())" /></para></enum>
<enum name="courtesytone"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='courtesytone']/synopsis/text())" /></para></enum>
<enum name="recordingfailsound"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='recordingfailsound']/synopsis/text())" /></para></enum>
<enum name="transferdialattempts"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='transferdialattempts']/synopsis/text())" /></para></enum>
<enum name="transferretrysound"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='transferretrysound']/synopsis/text())" /></para></enum>
<enum name="transferinvalidsound"><para><xi:include xpointer="xpointer(/docs/configInfo[@name='features']/configFile[@name='features.conf']/configObject[@name='globals']/configOption[@name='transferinvalidsound']/synopsis/text())" /></para></enum>
</enumlist>
</parameter>
</syntax>
@ -366,6 +378,9 @@
#define DEFAULT_ATXFER_COMPLETE "*2"
#define DEFAULT_ATXFER_THREEWAY "*3"
#define DEFAULT_ATXFER_SWAP "*4"
#define DEFAULT_TRANSFER_DIAL_ATTEMPTS 1
#define DEFAULT_TRANSFER_RETRY_SOUND "pbx-invalid"
#define DEFAULT_TRANSFER_INVALID_SOUND "pbx-invalid"
/*! Default pickup options */
#define DEFAULT_PICKUPEXTEN "*8"
@ -773,6 +788,7 @@ static void xfer_copy(struct ast_features_xfer_config *dest, const struct ast_fe
dest->atxferloopdelay = src->atxferloopdelay;
dest->atxfercallbackretries = src->atxfercallbackretries;
dest->atxferdropcall = src->atxferdropcall;
dest->transferdialattempts = src->transferdialattempts;
}
static void pickup_copy(struct ast_features_pickup_config *dest, const struct ast_features_pickup_config *src)
@ -882,6 +898,12 @@ static int xfer_set(struct ast_features_xfer_config *xfer, const char *name,
ast_string_field_set(xfer, atxferthreeway, value);
} else if (!strcasecmp(name, "atxferswap")) {
ast_string_field_set(xfer, atxferswap, value);
} else if (!strcasecmp(name, "transferdialattempts")) {
res = ast_parse_arg(value, PARSE_INT32, &xfer->transferdialattempts);
} else if (!strcasecmp(name, "transferretrysound")) {
ast_string_field_set(xfer, transferretrysound, value);
} else if (!strcasecmp(name, "transferinvalidsound")) {
ast_string_field_set(xfer, transferinvalidsound, value);
} else {
/* Unrecognized option */
res = -1;
@ -917,6 +939,12 @@ static int xfer_get(struct ast_features_xfer_config *xfer, const char *field,
ast_copy_string(buf, xfer->atxferthreeway, len);
} else if (!strcasecmp(field, "atxferswap")) {
ast_copy_string(buf, xfer->atxferswap, len);
} else if (!strcasecmp(field, "transferdialattempts")) {
snprintf(buf, len, "%u", xfer->transferdialattempts);
} else if (!strcasecmp(field, "transferretrysound")) {
ast_copy_string(buf, xfer->transferretrysound, len);
} else if (!strcasecmp(field, "transferinvalidsound")) {
ast_copy_string(buf, xfer->transferinvalidsound, len);
} else {
/* Unrecognized option */
res = -1;
@ -1731,6 +1759,12 @@ static int load_config(void)
DEFAULT_ATXFER_THREEWAY, xfer_handler, 0);
aco_option_register_custom(&cfg_info, "atxferswap", ACO_EXACT, global_options,
DEFAULT_ATXFER_SWAP, xfer_handler, 0);
aco_option_register_custom(&cfg_info, "transferdialattempts", ACO_EXACT, global_options,
__stringify(DEFAULT_TRANSFER_DIAL_ATTEMPTS), xfer_handler, 0);
aco_option_register_custom(&cfg_info, "transferretrysound", ACO_EXACT, global_options,
DEFAULT_TRANSFER_RETRY_SOUND, xfer_handler, 0);
aco_option_register_custom(&cfg_info, "transferinvalidsound", ACO_EXACT, global_options,
DEFAULT_TRANSFER_INVALID_SOUND, xfer_handler, 0);
aco_option_register_custom(&cfg_info, "pickupexten", ACO_EXACT, global_options,
DEFAULT_PICKUPEXTEN, pickup_handler, 0);

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