10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hai,
I am having one server/client both running in different host in UDP. How can i assure whether the data is recieved properly in client side. I am writing 250 KB in Server and client reading only 150 KB data. I am using select write in server and select read in client also.If i am putting one... (1 Reply)
Discussion started by: andrew.paul
1 Replies
2. AIX
May I know what is the TCP/UCP port range for any default AIX NFS? Based on rpcinfo -p, I got the following output:
program vers proto port service
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100000 4 ... (4 Replies)
Discussion started by: famasutika
4 Replies
3. Programming
hi, i am newbie of socket. i want to ask some question. if i want to send file from client to server, how do i do? and if i want to send file from server to client, how do i do?
any pro help me and if possible, you can post code for an example
i need it very much
thank you for helping me:)... (1 Reply)
Discussion started by: tung1984
1 Replies
4. UNIX for Dummies Questions & Answers
What's the command/options for UDP SOCK (Socket)? (5 Replies)
Discussion started by: Peevish
5 Replies
5. Windows & DOS: Issues & Discussions
Hi,
I know tcp port tunneling can be done using ssh/putty. how about udp?
I have a scenario where a license server handsout licenses to machines in that network ONLY. I have a windows machine in a different subnet and even though the client software can see license server, while using the... (6 Replies)
Discussion started by: upengan78
6 Replies
6. UNIX for Advanced & Expert Users
Hi,
I can see "udpInOverflows" errors when I execute 'netstat -s' on my Solaris box.
The number of errors are small - about 40.
e.g.
$ netstat -s|grep udp
UDP udpInDatagrams =1249190732 udpInErrors = 0
udpOutDatagrams =31663030 udpOutErrors = 0... (1 Reply)
Discussion started by: chaandana
1 Replies
7. Programming
Dear All
I have written a client server program for file transmission from one system to other using UDP.
Can i use the cksum number in the udp header to validate if the received packet is corrupted or not? If yes, how can i extract the header and validate it..
Also is there any way that... (3 Replies)
Discussion started by: iamcollins
3 Replies
8. IP Networking
hi...
i have made this client server prog with UDP sockets but im not getting the output. the client sends the message but the server just keeps on waiting. Im running the prog an a solaris 10 box...
server:
main()
{
int sd;
struct sockaddr_in server;
char buf;
int rc,len;
... (2 Replies)
Discussion started by: strider
2 Replies
9. IP Networking
hi all, newbie here, i'm working on mac os x and i'm trying to stream some info using udp from the terminal to another app that listens for osc messages on the same machine. but the man page on udp is pretty cryptic. my question is whether anyone has a recommendation for a good tutorial covering... (0 Replies)
Discussion started by: ohhmyhead
0 Replies
10. IP Networking
Just wondering if anyone knows of any good on-line documentation on TCP/UDP Ports. Basically i want to know how to check if they are in use, learn how to close them, etc...
Thanks... (5 Replies)
Discussion started by: eugene_mayo
5 Replies
udp(7) Miscellaneous Information Manual udp(7)
NAME
udp - Internet user datagram protocol (UDP)
SYNOPSIS
#include <sys/socket.h> #include <netinet/in.h>
The following is the socket call for AF_INET sockets:
s = socket(AF_INET, SOCK_DGRAM, 0); The following is the socket call for AF_INET6 sockets:
s = socket(AF_INET6, SOCK_DGRAM, 0);
DESCRIPTION
UDP is a simple, unreliable datagram protocol that is used to support the SOCK_DGRAM abstraction for the Internet Protocol family. UDP
sockets are connectionless, and are normally used with the sendto() and recvfrom() functions, though the connect() function may also be
used to fix the destination for future packets, in which case the recv() or read() and send() or write() functions may be used.
UDP address formats are identical to those used by TCP. In particular, UDP provides a port identifier in addition to the normal Internet
address format. Note that the UDP port space is separate from the TCP port space (that is, a UDP port may not be "connected" to a TCP
port). In addition, IPv4 broadcast packets may be sent (assuming the underlying network supports this) by using a reserved "broadcast
address"; this address is network interface dependent. There is no broadcast address in IPv6.
Options at the IP transport level may be used with UDP; see the ip() reference page.
ERRORS
If a socket operation fails, errno may be set to one of the following values: An attempt was made to create a socket with a port that has
already been allocated. An attempt was made to create a socket with a network address for which no network interface exists. The socket
is already connected. This error occurs when trying to establish connection on a socket or when trying to send a datagram with the desti-
nation address specified. The system ran out of memory for an internal data structure. The destination address of a datagram was not
specified, and the socket has not been connected.
RELATED INFORMATION
Functions: getsockopt(2), recv(2), send(2), socket(2)
Files: netintro(7), inet(7), ip(7) delim off
udp(7)