By Michael J. Donahoo, Kenneth L. Calvert
This booklet comprises adequate effortless to learn factors of tangible operating code for you to inside of a number of hours have a client/server socket connection up and dealing. either the textual content and the code are good written and simple to persist with. complicated information regarding non-blocking I/O allowed me to fast enforce heritage socket reads with no tying up a foreground technique. the irritating occurrences of
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Be extra effective and make your lifestyles more uncomplicated. That's what LDAP procedure management is all about.
System directors frequently spend loads of time coping with configuration details positioned on many alternative machines: usernames, passwords, printer configurations, e mail patron configurations, and community filesystem configurations, to call a couple of. LDAPv3 offers instruments for centralizing all the configuration details and putting it less than your regulate. instead of preserving numerous administrative databases (NIS, lively listing, Samba, and NFS configuration files), you may make adjustments in just one position and feature your entire structures instantly "see" the up to date information.
Practically platform self reliant, this publication makes use of the commonly on hand, open resource OpenLDAP 2 listing server as a premise for examples, exhibiting you ways to take advantage of it that can assist you deal with your configuration info successfully and securely. OpenLDAP 2 ships with so much Linux® distributions and Mac OS® X, and will be simply downloaded for many Unix-based platforms. After introducing the workings of a listing provider and the LDAP protocol, all points of establishing and fitting OpenLDAP, plus key ancillary applications like SASL and OpenSSL, this publication discusses:
• Configuration and entry control
• disbursed directories; replication and referral
• utilizing OpenLDAP to interchange NIS
• utilizing OpenLDAP to control e mail configurations
• utilizing LDAP for abstraction with FTP and HTTP servers, Samba, and Radius
• Interoperating with assorted LDAP servers, together with lively Directory
• Programming utilizing Net::LDAP
a good way to be a grasp of your area, LDAP approach management may also help you wake up and operating quick despite which LDAP model you utilize. After studying this booklet, regardless of no prior LDAP adventure, you'll have the capacity to combine a listing server into crucial community providers equivalent to mail, DNS, HTTP, and SMB/CIFS.
This quantity 4465 of the Lecture Notes in machine technological know-how sequence is a coll- tion of the papers of the NET-COOP 2007 convention, a ? rst-of-a-series Euro- NGI/FGI convention on community regulate and Optimization. the development happened within the appealing urban of Avignon, France, June 5–7, 2007, used to be together or- nized by way of INRIA and the collage of Avignon and was once hosted by means of the latter.
This e-book constitutes the completely refereed and peer-reviewed end result of the Formal equipment and trying out (FORTEST) community - shaped as a community validated lower than united kingdom EPSRC investment that investigated the relationships among formal (and semi-formal) tools and software program checking out - now being an issue staff of 2 BCS specific curiosity teams: Formal points of Computing technology (BCS FACS) and designated curiosity team in software program checking out (BCS SIGIST).
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Additional resources for TCP/IP Sockets in C, Second Edition: Practical Guide for Programmers (The Morgan Kaufmann Practical Guides Series)
Our generic code depends on this fact. The authors contend that these deﬁnitions will not change, but feel that full disclosure of this assumption (which allows more concise code) is important. Elimination of this assumption is straightforward enough to be left as an exercise. 2 Generic TCP Server Our protocol-independent TCP echo server uses similar adaptations to those in the client. Recall that the typical server binds to any available local address. To accomplish this, we (1) specify the ai_passive ﬂag and (2) specify null for the hostname.
However, we are only interested here in IPv4 (af_inet) and IPv6 (af_inet6). The src parameter references a null-terminated character string containing the address to convert. The dst parameter points to a block of memory in the caller’s space to hold the result; its length must be suﬃcient to hold the result (at least 4 bytes for IPv4 and 16 bytes for IPv6). inet_pton() returns 1 if the conversion succeeds, with the address referenced by dst in network byte order; 0 if the string pointed to by src is not formatted as a valid address; and −1 if the speciﬁed address family is unknown.
Check return value: lines 26–27 getaddrinfo() returns 0 if successful. Otherwise, the return value indicates the speciﬁc error. The auxiliary function gai_strerror() returns a character string error message explaining the given error return value. Note that these messages are diﬀerent from the normal errno-based messages. 4. Print addresses: lines 29–33 Iterate over the linked list of addresses, printing each to the console. The function PrintSocketAddress() takes an address to print and the stream on which to print.