Search Results

Search found 21530 results on 862 pages for 'service pack'.

Page 432/862 | < Previous Page | 428 429 430 431 432 433 434 435 436 437 438 439  | Next Page >

• Limited connections to Ubuntu 12.04 server

  - by Luis M. Valenzuela

  I'm having a weird problem with my server. The server is inside my network, connected to a 3com switch which is connected to the router that handles the internet connection. The main purpose of the server is to host a php application. What's happening is that user 1 to 15 in the private network have no problems connecting to the server, when user 16 tries to connect a time out comes out and is unable to connect to the server. It's not just to the php application, but to any service from the server. When the 15 users are using the application, the server doesn't even answer to ping. I haven't set any special limit in Apache's ini file or MySql and the firewall is being turned off because the server is only to give service to the internal network. Is there a parameter in any of the network's card conf. files that might me causing this ? Or should I suspect from the router's or switches configuration ? UPDATE. Tomorrow, I'm gonna do some test on the server modifying two kernel params in : /etc/sysctl.conf The settings are: net.core.somaxconn which has the limit on simultaneous network connections to the server and kernel.shmmax which controls the amount of memory the system can use for managing connections.

  Read the article

• Active Directory server down, recovering without reinstalling

  - by whatever

  My Windows 2003 server suddenly ceased to function as a DC (this server is the only DC of the domain). All AD related services are down. The only way I can login to the AD is physically to the machine. Everytime I access an AD-related service (e.g. "AD users and computers") I get the below error: Naming information cannot be located because: The specified directory service attribute or value does not exist. Contact your system administrator to verify that your domain is properly configured and is currently online. I found the below system event which matches the time when the issue started, this re-occurs everytime I reboot the server. NTDS General | Global Catalog | Active Directory was unable to establish a connection with the global catalog. Additional Data Error value: 1355 The specified domain either does not exist or could not be contacted. Internal ID: 3200d33 I started the troubleshooting with DNS. Netdiag throws the below error although I think this is simply a consequence of not being able to access the Global Catalog. The procedure entry point DnsGetPrimaryDomainName_UTF8 could not be located in the dynamic link library DNSAPI.dll. Anyway DNS seems OK because I can ping the DC FQDN from the DC itself. I found the below solution which is supposed to help by doing some cleanup of the metadata: http://support.microsoft.com/kb/216498 If I follow procedure 1 here is what I get at step 9: no current site Domain - DC=<mydomain>,DC=<com> no current server no current naming context I can continue the procedure until step 14. I haven't tested step 15 as my understanding is that I will have to reinstall the whole AD again. Is there any way I can recover my AD from there without having to reinstall the whole thing? Update: Yes, the server was powered off/on because reboot would take forever (not because I thought power cycling the unit would fix it more than a reboot).

  Read the article

• iptables: How to combine DNAT and SNAT to use a secondary IP address?

  - by Que_273

  There are lots of questions on here about iptables DNAT/SNAT setups but I haven't found one that solves my current problem. I have services bound to the IP address of eth0 (e.g. 192.168.0.20) and I also have a IP address on eth0:0 (192.168.0.40) which is shared with another server. Only one server is active, so this alias interface comes and goes depending on which server is active. In order to get traffic accepted by the service a DNAT rule is used to change the destination IP. iptables -t nat -A PREROUTING -d 192.168.0.40 -p udp --dport 7100 -j DNAT --to-destination 192.168.0.20 I also wish all outbound traffic from this service to appear to come from the shared IP, so that return responses will work in the event of a active-standby failover. iptables -t nat -A POSTROUTING -p udp --sport 7100 -j SNAT --to-source 192.168.0.40 My problem is that the SNAT rule is not always run. Inbound traffic causes a connection tracking entry like this. [root]# conntrack -L -p udp udp 17 170 src=192.168.0.185 dst=192.168.0.40 sport=7100 dport=7100 src=192.168.0.20 dst=192.168.0.185 sport=7100 dport=7100 [ASSURED] mark=0 secmark=0 use=2 which means the POSTROUTING chain is not run and outbound traffic leaves with the real IP address as the source. I am thinking I can set up a NOTRACK rule in the raw table to prevent conntracking for this port number, but is there a better or more efficient way to make this work? Edit - Alternative question: Is there a way (in CentOS/Linux) to have an interface that can be bound to but not used, such that it can be attached to the network or detached when a shared IP address is swapped between servers?

  Read the article

• Battery notification always showing 'xx% remaining' with Windows 7 on an acer Aspire 5590

  - by dindeman

  My battery level always shows up as something like 55% remaining or 63% remaining ...etc despite that it is in fact charging. Additionally it doesn't go any further than 80% remaining even if I keep it in charge forever. This leads me to a side annoying effect which is that I cannot proceed to install Windows 7 Service Pack 1 as its installer requires the laptop to be plugged with a power cord. My laptop is plugged with the power cord but because of the above issue (it doesn't display anything else than the xx% remaining) Windows thinks that the laptop is using its battery and that the power cord is disconnected. I have installed the original acer ePower Management tool that let you configure the power scheme... etc, I was hoping that this would help me circumvent the 80% issue but it doesn't.

  Read the article

• Enterprise Redirection Services?

  - by Aaron Alton

  This is probably a case of "if I new what it was called, I could google it in 5 minutes" - but I don't know what it's called. It's probably best to explain the requirement using an example. We have a number of services (vpn, owa, etc) which we host from one of our datacenters. We have a number of datacenters, and we technically have the infrastructure already in place to support these services at a number of our datacenters. To provide access to these "services", I would create an external DNS entry (ex. VPN.MyCompany.com Gateway IP for one of my DCs), and clients will connect to it via the DNS entry. Since I have multiple datacenters that can support this service, I could theoretically offer a "highly available, geographically dispersed" solution if I could point this DNS entry to some sort of third party who offers highly available "redirection" services. If my primary site goes down, I could just make a change via some management console and configure the redirector to point to a different DC. Of course, it would be fairly straightforward to set this sort of thing up on one of our servers, but that would kinda defeat the purpose of a highly available third party. Is anyone familiar with a service like this? I'm thinking something like DynDNS, but with Enterprise availability guarantees.

  Read the article

• Uninstalling PowerShell 1.0

  - by Ddono25

  I am attempting to standardize our PowerShell deployment and usage across all servers, which involves uninstalling PS1.0/installing PS2.0 on Server 2003 machines. In searching for KB926139 through CMD and Control Panel Add/Remove Programs, it is nowhere to be found. We have KB926141 installed on these servers as the Language Pack update, but no initial Install Update. PowerShell 1.0 is installed on the server and can be found at the default locations (%windir%\System32\WindowsPowerShell\V1.0, %windir%\Syswow64\WindowsPowerShell\V1.0). I would like to avoid deleting the Registry Entry in this situation since it should be pretty simple, any help would be appreciated. Thanks!

  Read the article

• Laptop Toshiba Satelite M300 screen is completely blank.

  - by Nadia

  Hi, My laptop Toshiba satelite M300 Laptop screen is completely blacked out. It powers up and appears to be running but the screen is blank. I've taken battery pack off and back on again. Before the screen was blacked out, it used to flicker a bit. Also before it blacked out i was having problems with the internet and I was on phone to Internet provider who took me through steps to take my laptop back to a future date where it was operational. It then worked properly for a few days but then switched it on and screen was blank. It's more then a year old so out of warranty. Any suggestions on whether I should pay the $300 bucks to see if they can fix it?

  Read the article

• Detecting hardware and installing drivers in Windows XP

  - by JL.

  I have on my desk a computer that I am reinstalling. I have just completed the Windows XP install , which is professional service pack 3. I have also installed an AV package. Now it is time to install the audio and display drivers. Windows Update does not detect the Display card, and neither the audio device. I really have no idea what devices are present in this system, and I am thinking of opening the case, and reading some IDs from the cards themselves. Before I do this, is there not some kind of tool that can automatically detect hardware and install drivers automatically. If not then at least tell me what devices are present, with some real descriptions, so I can search for drivers.

  Read the article

• Can’t connect to SQL Server 2008 - looks like Shared Memory problem

  - by Proposition Joe

  I am unable to connect to my local instance of SQL Server 2008 Express using SQL Server Management Studio. I believe the problem is related to a change I made to the connection protocols. Before the error occurred, I had Shared Memory enabled and Named Pipes and TCP/IP disabled. I then enabled both Named Pipes and TCP/IP, and this is when I started experiencing the problem. When I try to connect to the server with SSMS (with either my SQL server sysadmin login or with windows authentication), I get the following error message: A connection was successfully established with the server, but then an error occurred during the login process. (provider: Named Pipes Provider, error: 0 - No process is on the other end of the pipe.) (Microsoft SQL Server, Error: 233) Why is it returning a Named Pipes error? Why would it not just use Shared Memory, as this has a higher priority order in the list of connection protocols? It seems like it is not listening on Shared Memory for some reason? When I set Named Pipes to enabled and try to connect, I get the same error message. My windows account is does not have administrator priviliges on my computer - perhaps this is making a difference in some way (as some of the discussions in this post about an "SuperSocketNetLib\Lpc" registry key seems to suggest). I have tried restarting the SQL Server service, by the way, and also tried to get someone to log onto the machine with an admin account to restart the SQL Server service. Still no luck.

  Read the article

• Windows 8 blue screen error watchdog violation

  - by Pramodh

  My system is windows 8 pro rtm x64. Recently my system started hanging frequently. Nothing but the restart button works. But now just after hanging it showed me a BSOD error saying watchdog violation. I used bluscreen viewer to see the error in the memory dump and it showed me something about hal.dll, ntoskrnl.exe. This is what windows showed me. Problem signature Problem Event Name: BlueScreen OS Version: 6.2.9200.2.0.0.256.48 Locale ID: 1033 Extra information about the problem BCCode: 133 BCP1: 0000000000000000 BCP2: 0000000000000281 BCP3: 0000000000000280 BCP4: 0000000000000000 OS Version: 6_2_9200 Service Pack: 0_0 Product: 256_1 Bucket ID: 0x133_DPC_NETIO!KfdClassify Server information: c03a9f52-f2b5-483f-9b4a-cbb5be3a72c0 Can anyone please walk me through the steps to get rid of this error please? Thank you.

  Read the article

• Sagem Router Wifi Key Issue

  - by user23392

  Hi I have a multiservices sagem router which supports wifi as well, the pack came up with a default wifi configuration key and a WEP Key in the label of the package like this: WIFI Configuration key: abcd1234 WEP Key: C4H2F167C10263AEB98V52920E Now, when i execute the wifi usb wizard in the official cd, it asks me for the WIFI key, i put the abcd1234 & it says it's incorrect, i try the long WEP key and it says that the key should only have 8 characters. When i go to the control panel of the router in the wifi config, i see that: Open Authentification System WEP 128 Bit Passphrase: C4H2F167C10263AEB98V52920E Now since the wizard only accepts 8 characters, i try to change the 128bit to 64bit and put some 8 characters and it ends up saying that the new key should be 5 or 13, or 10-26 hex numbers. What to do? Thanks

  Read the article

• What is the risk of introducing non standard image machines to a corporate environment

  - by Troy Hunt

  I’m after some feedback from those in the managed desktop or network security space on the risks of introducing machines that are not built on a standard desktop image into a large corporate environment. This particular context relates to the standard corporate image (32 bit Win XP) in a large multi-national not being suitable for a particular segment of users. In short, I’m looking at what hurdles we might come across by proposing the introduction of machines which are built and maintained by a handful of software developers and not based on the corporate desktop image (proposing 64 bit Win 7). I suspect the barriers are primarily around virus definition updates, the rollout of service packs and patches and the compatibility of existing applications with the newer OS. In terms of viruses and software updates, if machines were using common virus protection software with automated updates and using Windows Update for service packs and patches, is there still a viable risk to the corporate environment? For that matter, are large corporate environments normally vulnerable to the introduction of a machine not based on a standard image? I’m trying to get my head around how real the risk of infection and other adverse events are from machines being plugged into the network. There are multiple scenarios outside of just the example above where this might happen (i.e. a vendor plugging in a machine for internet access during a presentation). Would a large corporate network normally be sufficiently hardened against such innocuous activity? I appreciate the theory as to why policies such as standard desktop images exist, I’m just interested in the actual, practical risk and how much a network should be protected by means other than what is managed on individual PCs.

  Read the article

• Permission denied in Ubuntu

  - by gcc

  I have a file which includes new icons for my system. Anyway, How can I change my old icons down with new ones? The name of the new icon pack is "myFAV-TUX" and it's sitting on my desktop. The problem is, I can't copy them into the usr/share/icons/ folder. It says, permission denied. I also tried ls -l .... But i couldn't do it. How can I change the icon theme? Please help.

  Read the article

• How to empty a project created by svnadmin create /svnroot ?

  - by apache

  I want to clear all files checked into the repository /svnroot Is there a way to do this? I don't find a possible command to do this: [secret@vps303 ~]# svnadmin --help general usage: svnadmin SUBCOMMAND REPOS_PATH [ARGS & OPTIONS ...] Type 'svnadmin help <subcommand>' for help on a specific subcommand. Type 'svnadmin --version' to see the program version and FS modules. Available subcommands: crashtest create deltify dump help (?, h) hotcopy list-dblogs list-unused-dblogs load lslocks lstxns pack recover rmlocks rmtxns setlog setrevprop setuuid upgrade verify

  Read the article

• Why does my ftp(e)s server fails like half of the time

  - by user1092608

  I have this discussion at work regarding our ftp server running via vsftpd. Initially, we have opted to serve ftpes instead of sftp because this seemed the most flexible and straightforward solution for our server to have secure file transmission. Afterwards, our ftp server seems to be a source of issues for our end users. Half of the time, users complain about not working ftp connections. I must say, i tested our FTP trough different infrastructures (=in the field, at random times at random places) and indeed, sometimes behind some configurations (=no idea how they are configured, because the 'field' testing), i recieve errors. Some of the are: Error: Failed to retrieve directory listing (filezilla) Furthermore, behind my basic home configuration, everything seems to be running fine. I (think I) did all the basic configuration checks (passive mode?, firewall for all ports?, ...) and can't seem to find the source. Being a bunch of techies at our small office, yet knowing nothing about infrastructure, some start suggesting that ftps protocol could be the source of issues. ("No, i only knew sftp so far" "Ftps is not widespread"). I, however, strongly doubt this hypothesis, since reading around on the www, asking questions on serverfault, everyone seems to deny this. So, as I would like to avoid reconfiguring, since this involves messing around in our SSH service, our virtual user setup and ftp service, i would need some advice on 1) what could be potentially the general cause? 2) do you have some general tips? 3) would you mind having a look at my configuration file? ----- General Settings ----- write_enable=YES dirmessage_enable=YES nopriv_user=ftpsecure ftpd_banner="Welcome to XXXX FTP!" hide_ids=YES hide_file=.* max_per_ip=10 max_clients=10 local_enable=YES local_umask=022 chroot_local_user=YES secure_chroot_dir=/usr/share/empty userlist_enable=NO userlist_deny=YES userlist_file=/etc/vsftp_deny_users guest_enable=YES guest_username=ftpvirtual virtual_use_local_privs=YES user_sub_token=$USER local_root=/srv/ftp/ftpvirtual/$USER anonymous_enable=NO syslog_enable=NO xferlog_enable=YES xferlog_file=/var/log/vsftpd_xfer.log connect_from_port_20=YES pam_service_name=vsftpd listen=YES listen_port=21 pasv_enable=YES pasv_min_port=30000 pasv_max_port=30030 pasv_address=foo ssl_enable=YES rsa_cert_file=/etc/vsftpd.pem rsa_private_key_file=/etc/vsftpd.pem force_local_data_ssl=YES force_local_logins_ssl=YES ssl_tlsv1=YES ssl_sslv2=YES ssl_sslv3=YES ssl_ciphers=HIGH anon_mkdir_write_enable=NO anon_root=/srv/ftp anon_upload_enable=NO idle_session_timeout=900 log_ftp_protocol=NO dsa_cert_file=/etc/vsftpd.pem Thanks

  Read the article

• windows-server-2003, windows server, download utility from command line , http or ftp or any other p

  - by Michael

  Hello , I need to know if there is anyway utility bult-in windows 2003 that I can use from the command line to download a file using only one command. Basically I know that I can download from ftp using the "ftp" utility but in order to do that I need to do first "ftp open" and then pass the other commands so it doesn't help me because I need to do perform the download only from one command. The download may be performed through http, ftp or any other protocol. OS Name: Microsoft(R) Windows(R) Server 2003 Enterprise x64 Editio OS Version: 5.2.3790 Service Pack 2 Build 379 Thank you in advance for any answer !

  Read the article

• UNC shared path not accessible though necessary permissions are set

  - by Vysakh

  I have 2 environments A and B. A is an original environment whereas B is a clone of A, exactly except AD servers. AD server of B has been assigned a trust relationship with A, so that all the service and user accounts of A can be used in B too. And trusting works fine, perfect!! But I encounter some issues accessing UNC paths(\server2\shared) with these service accounts. I had a check in A environment and all the permissions set in that environment is done in B too (already set since it is a clone of A),but the issue is with B environment only. And FYI, the user is an owner of that folder in both the environments. I tried creating a folder inside the share(\server2\shared) using command prompt, but failed with error "access denied". What I done a workaround is that I added that user in "security" tab of folder permissions and after that it worked fine. But this was not done in the original environment. Is this something related to trust relationship? Why the share to the same location for the same user works differently in 2 environments, though they've been set with the same permissions. FYI, these are windows 2003 servers. Can someone please help.

  Read the article

• Can not connect remotely to MySQL Server on Ubuntu 10.10

  - by BobFranz

  Ok I have searched google for two days trying to get this to work. Here are the steps I have taken so far: Clean install of Ubuntu 10.10 Install mysql 5.1 as well as admin Comment out the bind address in the config file Create a new database Create a new user that is username@% to allow remote connections Grant all access to this user to the new database EXCEPT the grant option Login on the server is ok using this new user and database on the localhost Login on the server is ok using this new user and database on the server internal network ip Login from a remote computer is ok using this new user and database using the internal network ip Login is not working when logging in with this username and database using the external ip address from the server or the remote computer. I have port forwarding enabled for this port and it is viewable from outside as confirmed by canyouseeme.org I have nmap'd using the following command on the internal ip and get the below result: nmap -PN -p 3306 192.168.1.73 Starting Nmap 5.21 ( http://nmap.org ) at 2011-02-19 13:41 PST Nmap scan report for computername-System-Name (192.168.1.73) Host is up (0.00064s latency). PORT STATE SERVICE 3306/tcp open mysql Nmap done: 1 IP address (1 host up) scanned in 0.23 seconds I have nmap'd using the following command on the internal ip and get the below result(I have hidden ip for obvious reasons): nmap -PN -p 3306 xxx.xxx.xx.xxx Starting Nmap 5.21 ( http://nmap.org ) at 2011-02-19 13:42 PST Nmap scan report for HOSTNAME (xxx.xxx.xx.xxx) Host is up (0.00056s latency). PORT STATE SERVICE 3306/tcp closed mysql Nmap done: 1 IP address (1 host up) scanned in 0.21 seconds I am completely stuck here and need some help. I have tried everything under the moon and still can not connect from a remote external ip address. Any help is greatly appreciated and I need to do anything to help find the problem let me know and I will post the results here.

  Read the article

• Trouble with Remote Desktop pulling through printers. Drive Redirection works, and the ports created but not the printers

  - by Windex

  I've run out of things to look into. All the support documents have been gone through and still provide no resolution. I've checked the service permissions, (sc sdshow spooler) they all match up with other systems and what is output on the support documents. I'm nearly positive that the issue can't be permissions anyway as the software requires all users to be an administrator, so all users are a local administrator. (I haven't looked into why yet but its on the list, I was just recently brought into this team and we've put procedures in place for quick recovery.) We've applied hot fixes relating to RDS and printing, though I'm not sure which ones they were. I've combed through group policy and no where is printer redirection disabled. It's setup with all default values regarding the use and redirection of printers and a quick install of W2k8 R2 shows that it works by default. This dev install was joined to the same domain, placed in the same OU, shows the same policies applied, etc, etc, etc, The server generates all the correct redirected ports but no printers are created. It will also redirect drives without issue, this would seem to rule out the usermode service that handles redirects being broken. No events are logged related to any of the events and there are no events from the TerminalServices-Printer source. There were local printers setup. I didn't think it would mattter but as I was running out of ideas I tried deleting them all with no change. The TS was configured for the software it will be running before we checked out the redirection of printers so the other team responsible to setting up new servers wants to find a fix instead of reloading a new server. I'm not sure where or what else to look for. Any ideas?

  Read the article

• USB Mouse doesn't work after turning on Laptop

  - by Barry

  I have a USB mouse attached to my laptop which does not work when I switch my laptop on. I have to unplug it and plug it back in before it works. When I do this no driver installation occurs (presumably because it has already done this) the usual beep sound does occur and the mouse starts working again. If my laptop goes to sleep I can move the mouse and the laptop comes back to life. In fact it works perfectly apart from this annoying niggle on startup. Can anyone shed any light as to why I have to keep unplugging and plugging my mouse back on startup? I am running Windows 7 Home Premium Service Pack 1 (64 bit) on a Toshiba Satellite L755-1LL Laptop.

  Read the article

• PassEnv does not find ENV variables

  - by quodlibetor

  I've got this /etc/profile.d/myfile.sh: export MYVAR=myval I also have a PassEnv MYVAR line in a <virtualhost> section of an apache conf dir. That lets me do things like: $ echo $MYVAR myval $ python >>> import os; os.getenv('MYVAR') 'myval' $ sudo echo $MYVAR myval $ sudo -i root# echo $MYVAR myval But then, despite that being the case I get: root# /sbin/service httpd restart /sbin/service httpd restart Stopping httpd: [ OK ] Starting httpd: [Mon Oct 22 14:44:02 2012] [warn] PassEnv variable MYVAR was undefined [ OK ] And all of my attempts to access MYVAR from within my wsgi scripts just don't work. Thoughts? Am I doing something obviously wrong? EDIT for more detail I've got a swarm of computers/VMs and a swarm of developers working on a swarm of projects. I need a simple central place to keep environment information, the most common is the "environment" (dev/stage/prod). The scheme that we've got (modifying *.wsgi programmatically) is turning out to be more fragile than we'd like. The main options that I see are: put things in the shell environment put things in other config files Getting things into the shell environment is the best, because we won't need to write yet more duplicated "what is my environment" code.

  Read the article

• Cant Add Columns to a AD Task pad except for the top level of the domain

  - by Darktux

  We are working on Active Directory taskpads application for user management in our organization and facing stange issue. When we create a taskpad, and when we are at top level of the domain, i can click view - Add/Remove Columns and add "Pre Windows Name" (and lots of other properties) to the taskpad as columns, but when i just go 1 level down , i can only see "Operating System" and "Service Pack" ; why is it happening , isnt "Domain Admins" supposed to god access to all the things in AD domain , atleast of objects they own? It is important to have "Pre Windows 2000" Name as a column begause with out that our "Shell Command" task wont show up in taskpads, since its bound to parameter "Col<9" (which is pre qindows name). Please do let me know if any additions questions to clarify my problem.

  Read the article

• How to delete previous revisions with svn?

  - by apache

  I want to clear all all previous revisions and leave only the current revision. Is there a way to do this? I don't find a possible command to do this: [secret@vps303 ~]# svnadmin --help general usage: svnadmin SUBCOMMAND REPOS_PATH [ARGS & OPTIONS ...] Type 'svnadmin help <subcommand>' for help on a specific subcommand. Type 'svnadmin --version' to see the program version and FS modules. Available subcommands: crashtest create deltify dump help (?, h) hotcopy list-dblogs list-unused-dblogs load lslocks lstxns pack recover rmlocks rmtxns setlog setrevprop setuuid upgrade verify

  Read the article

• Change base language of Windows 8 Installer

  - by Firedragon

  I have access to Dreamspark and Windows 8. When I picked the version I picked English which is fine, but it is US English however I realised I should have picked UK English instead. You are only allowed one version so i cannot switch it. Now, I can change the language pack later to UK English but in the language bar US English is always listed and seems impossible to remove and system restore reverts to US English. Is there a way to fully change the base language to UK in the installer, so in effect makin the installer offer US and UK English, or just UK English as if I had chosen the correct version?

  Read the article

• Designing a persistent asynchronous TCP protocol

  - by dogglebones

  I have got a collection of web sites that need to send time-sensitive messages to host machines all over my metro area, each on its own generally dynamic IP. Until now, I have been doing this the way of the script kiddie: Each host machine runs an (s)FTP server, or an HTTP(s) server, and correspondingly has a certain port opened up by its gateway. Each host machine runs a program that watches a certain folder and automatically opens or prints or exec()s when a new file of a given extension shows up. Dynamic IP addresses are accommodated using a dynamic DNS service. Each web site does cURL or fsockopen or whatever and communicates directly with its recipient as-needed. This approach has been suprisingly reliable, however obvious issues have come up and the situation needs to be addressed. As stated, these messages are time-sensitive and failures need to be detected within minutes of submission by end-users. What I'm doing is building a messaging protocol. It will run on a machine and connection in my control. As far as the service is concerned, there is no distinction between web site and host machine -- there is only one device sending a message to another device. So that's where I'm at right now. I've got a skeleton server and a skeleton client. They can negotiate high-quality authentication and encryption. The (TCP) connection is persistent and asynchronous, and can handle delimited (i.e., read until \r\n or whatever) as well as length-prefixed (i.e., read exactly n bytes) messages. Unless somebody gives me a better idea, I think I'll handle messages as byte arrays. So I'm looking for suggestions on how to model the protocol itself -- at the application level. I'll mostly be transferring XML and DLM type files, as well as control messages for things like "handshake" and "is so-and-so online?" and so forth. Is there anything really stupid in my train of thought? Or anything I should read about before I get started? Stuff like that -- please and thanks.

  Read the article

< Previous Page | 428 429 430 431 432 433 434 435 436 437 438 439  | Next Page >