Re: HTTP request doesn't time out when Web server not responding

Timothee Besset <[email protected]>
Newsgroups gmane.comp.lib.libwww
Message-ID <[email protected]> 
You are using sockets on win32? Maybe you should try WWW_WIN_ASYNC? (I
dunno why the timeout would not work though, just a note)

TTimo

On Mon, 30 Dec 2002 12:45:21 +0100
"Finn Ellebaek Nielsen" <[email protected]> wrote:

> 
> Dear all.
> 
> Windows 2000 Professional SP2
> LibWWW 5.4.0
> 
> I have difficulties getting the HTTP requests to time out when the Web
> server is not responding. For instance, the showtext example sets up a
> timeout of 15 seconds, but it just continues to wait forever. My program
> (with a timeout of 30 seconds) produces the following trace when the Web
> server on localhost is not started:
> 
> Timer....... registering 004076A0 as timer set cbf
> Timer....... registering 00407710 as timer delete cbf
> Event....... registering 00406AC0
> Event....... registering 00406DD0
> Transport... Adding `tcp'
> Transport... Adding `buffered_tcp'
> Transport... Adding `local'
> Protocol.... Adding `ftp'
> Protocol.... Adding `nntp'
> Protocol.... Adding `news'
> Protocol.... Adding `gopher'
> Protocol.... Adding `http'
> Protocol.... Adding `file'
> Protocol.... Adding `cache'
> Protocol.... Adding `telnet'
> Protocol.... Adding `tn3270'
> Protocol.... Adding `rlogin'
> Net Before.. Add 0043BE60 with order 49150 tmplate `http://*' context
> 00000000
> Net Before.. Add 0043CA40 with order 49150 tmplate `http://*' context
> 00000000
> Net Before.. Add 0043B770 with order 49150 tmplate `<null>' context 00000000
> Net Before.. Add 0043B600 with order 49150 tmplate `<null>' context 00000000
> Net After... Add 0043BEF0 with order 32767 tmplate `http://*' code -401
> context 00000000
> Net After... Add 0043BEF0 with order 32767 tmplate `http://*' code -418
> context 00000000
> Net After... Add 0043CCD0 with order 32767 tmplate `http://*' code 1 context
> 00000000
> Net After... Add 0043BB20 with order 32767 tmplate `http://*' code 301
> context 00000000
> Net After... Add 0043BB20 with order 32767 tmplate `http://*' code 302
> context 00000000
> Net After... Add 0043BB20 with order 32767 tmplate `http://*' code 303
> context 00000000
> Net After... Add 0043BB20 with order 32767 tmplate `http://*' code 307
> context 00000000
> Net After... Add 0043BF50 with order 32767 tmplate `http://*' code 1 context
> 00000000
> Net After... Add 0043BD20 with order 32767 tmplate `http://*' code 305
> context 00000000
> Net After... Add 0043B910 with order 49150 tmplate `<null>' code 1 context
> 00000000
> Conversions. Adding 00407A80 with quality 1.00
> Conversions. Adding 004397C0 with quality 1.00
> Conversions. Adding 004399F0 with quality 1.00
> Conversions. Adding 004398D0 with quality 1.00
> Conversions. Adding 00439930 with quality 1.00
> Conversions. Adding 00439990 with quality 1.00
> Conversions. Adding 00439A50 with quality 1.00
> Conversions. Adding 00439D70 with quality 1.00
> Conversions. Adding 004382C0 with quality 1.00
> Conversions. Adding 00437A80 with quality 1.00
> Conversions. Adding 00435EB0 with quality 1.00
> Conversions. Adding 00434060 with quality 1.00
> Conversions. Adding 00434140 with quality 1.00
> Conversions. Adding 00432FC0 with quality 1.00
> Conversions. Adding 004318F0 with quality 1.00
> Conversions. Adding 00431C00 with quality 1.00
> Conversions. Adding 0042CEB0 with quality 1.00
> Conversions. Adding 00407B10 with quality 0.30
> Codings..... Adding chunked with quality 1.00
> Net After... Add 00401221 with order 65535 tmplate `<null>' code 1 context
> 00000000
> ChunkStream. Chunk 008A9D38 created with max size 0
> HTAccess.... Accessing document http://localhost/
> Net Before.. calling 0043B770 (request 008A2930, context 00000000)
> Net Before.. calling 0043BE60 (request 008A2930, context 00000000)
> URL Tree.... did NOT find `w3c-AA'
> Credentials. verified
> Net Before.. calling 0043CA40 (request 008A2930, context 00000000)
> URL Tree.... did NOT find `w3c-pep'
> Net Before.. calling 0043B600 (request 008A2930, context 00000000)
> Net Object.. 008AA148 created with hash 0
> Net Object.. starting request 008A2930 (retry=1) with net object 008AA148
> HTTP........ Looking for `http://localhost/'
> HTHost parse Looking up `localhost' on port 80
> Event....... Created event 008AAF08 with context 008AADC8, priority 20, and
> timeout 30000
> Event....... Created event 008AAF60 with context 008AADC8, priority 20, and
> timeout 30000
> Event....... Created event 008AAFB8 with context 008AADC8, priority 20, and
> timeout 30000
> Event....... Created event 008AB010 with context 008AADC8, priority 20, and
> timeout 30000
> Event....... Created event 008AB068 with context 008AADC8, priority 20, and
> timeout 30000
> Event....... Created event 008AB0C0 with context 008AADC8, priority 20, and
> timeout 30000
> Host info... added `localhost' with host 008AADC8 to list 008AABE0
> Host connect Grabbing lock on Host 008AADC8 with 008AA148
> Host info... Added Net 008AA148 (request 008A2930) to pipe on Host 008AADC8,
> 1 requests made, 1 requests in pipe, 0 pend
> ing
> HTHost...... No ActivateRequest callback handler registered
> HTHost 008AADC8 going to state TCP_CHANNEL.
> HTHost 008AADC8 going to state TCP_DNS.
> DNS Add..... `localhost' with 1 home(s) to 008AB2F0
> ParseInet... as port 80 on 127.0.0.1 with 1 homes
> HTHost 008AADC8 going to state TCP_NEED_SOCKET.
> Socket...... Created 560
> Net Manager. Increasing active sockets to 1, 0 persistent sockets
> Socket...... Turned off Nagle's algorithm
> Socket...... Blocking socket
> Channel..... Hash value is 24
> Channel..... Added 008AB688 to list 008AB640
> Reader...... Created reader stream 00DF0068
> Socket...... TCP send buffer size is 8192 for socket 560
> HTHost 008AADC8 going to state TCP_NEED_CONNECT.
> HTDoConnect. WOULD BLOCK `localhost'
> Host Event.. WRITE passed to `http://localhost/'
> HTDoConnect. WOULD BLOCK `localhost'
> Host Event.. WRITE passed to `http://localhost/'
> HTDoConnect. WOULD BLOCK `localhost'
> Host Event.. WRITE passed to `http://localhost/'
> HTDoConnect. WOULD BLOCK `localhost'
> 
> The last two lines are produced about once a second and the program just
> keeps on running.
> 
> What is wrong?
> 
> Happy New Year.
> 
> Best regards,
> 
> Finn Ellebaek
> 
> ---------------------------------------------------------------------------
>  Finn Ellebaek Nielsen                           ChangeGroup ApS
>  Product Manager, Principal Consultant, Partner  Kronprinsessegade 54, 4.
>  E-mail: [email protected]    DK-1306  Koebenhavn K
>  Mobile: +45 20 32 49 25                         Denmark
>  Phone:  +45 33 32 77 78                         http://www.changegroup.dk
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> 
> 
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