New demonstration. Get a directory listing from two ftp servers,

simultaneously.

demo/dualftp.py

+# A more complex ftp example.  This one connects to two ftp servers,
+# does a "cd pub" on both, and prints a directory listing.  This is
+# done in parallell, so the output from the fastest server will be
+# printed first.  You could use this program as a kind of poor mans
+# ftp server benchmark.
+#
+# This also tests the expect_after functionality.
+
+import pcl_expect
+
+pcl_expect.stty_init = "-onlcr -ocrnl -echo"
+
+funet = pcl_expect.spawn("ftp ftp.funet.fi")
+sunet = pcl_expect.spawn("ftp ftp.sunet.se")
+
+def name_cb(ftp):
+    ftp.send("anonymous\n")
+    return pcl_expect.CONT
+
+def password_cb(ftp):
+    ftp.send("ceder@lysator.liu.se\n")
+    return pcl_expect.CONT
+
+cmds = {}
+cmds[funet] = ["cd pub\n", "passive\n", "dir\n"]
+cmds[sunet] = ["cd pub\n", "passive\n", "dir\n"]
+
+printed = 0
+def prompt_cb(ftp):
+    global printed
+
+    if len(cmds[ftp]) > 0:
+        ftp.send(cmds[ftp][0])
+        cmds[ftp] = cmds[ftp][1:]
+    else:
+        print ftp.match.group()
+        printed += 1
+            
+    pcl_expect.debug("STATE: cmds[sunet] = %s\n" % cmds[sunet])
+    pcl_expect.debug("STATE: cmds[funet] = %s\n" % cmds[funet])
+
+    if printed < 2:
+        return pcl_expect.CONT
+
+pcl_expect.expect_after([(pcl_expect.RE, funet, "Name.*:", name_cb),
+                         (pcl_expect.RE, sunet, "Name.*:", name_cb),
+                         (pcl_expect.RE, funet, "Password:", password_cb),
+                         (pcl_expect.RE, sunet, "Password:", password_cb),
+                         (pcl_expect.RE, funet, "(?s).*ftp> ", prompt_cb),
+                         (pcl_expect.RE, sunet, "(?s).*ftp> ", prompt_cb)])
+              
+x = pcl_expect.impl()
+while x.loop():
+    pass
+
+sunet.send("bye\n")
+funet.send("bye\n")
+
+pcl_expect.expect_after([])
+
+x = pcl_expect.impl()
+while x.loop():
+    if x.eof(sunet):
+        print "SUNET final output:", sunet.match
+        sunet.close()
+
+x = pcl_expect.impl()
+while x.loop():
+    if x.eof(funet):
+        print "FUNET final output:", funet.match
+        funet.close()