1 files changed, 61 insertions, 0 deletions
diff --git a/examples/redis-pubsub.tcl b/examples/redis-pubsub.tcl
new file mode 100644
index 0000000..ce0f78c
--- /dev/null
+++ b/examples/redis-pubsub.tcl
@@ -0,0 +1,61 @@
+#!/usr/bin/env jimsh
+
+# Requires the redis extension
+package require redis
+
+# A redis server should be running either on localhost 6379
+# or on the given host port
+#
+# Usage: redis-pubsub.tcl ?pub|sub? ?host:addr?
+#
+# If pub or sub is not given, forks and does both
+
+if {[lindex $argv 0] in {pub sub}} {
+    # Run in single process mode
+    set argv [lassign $argv op]
+} else {
+    # fork before connecting so that both processes don't share
+    # a connection
+    if {[os.fork] == 0} {
+        # child subscribes
+        set op sub
+    } else {
+        set op pub
+    }
+}
+
+try {
+    lassign $argv addr
+    if {$addr eq ""} {
+            set addr localhost:6379
+    }
+    set r [redis [socket stream $addr]]
+} on error msg {
+    puts [errorInfo $msg]
+    exit 1
+}
+
+if {$op eq "sub"} {
+    $r SUBSCRIBE chin
+    $r SUBSCRIBE chan
+
+    $r readable {
+        after cancel $afterid
+        set result [$r read]
+        puts "$op: $result"
+        set afterid [after 2000 {incr done}]
+    }
+    # If no message for 2 seconds, stop
+    set afterid [after 2000 {incr done}]
+    vwait done
+    puts "$op: quitting on idle"
+} else {
+    loop i 1 15 {
+        $r PUBLISH chan PONG$i
+        puts "$op: chan PONG$i"
+        after 250
+        $r PUBLISH chin PING$i
+        puts "$op: chin PING$i"
+        after 250
+    }
+}