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How to use the C socket API in C++ on z/OS

By : bryan314
Date : March 29 2020, 07:55 AM
it helps some times Keep a copy of the IBM manuals handy:
z/OS V1R11.0 XL C/C++ Programming Guide z/OS V1R11.0 XL C/C++ Run-Time Library Reference
code :
#include <sys/socket.h>

int connect(int socket, const struct sockaddr *address, socklen_t address_len);
#define _OE_SOCKETS
#include <sys/types.h>
#include <sys/socket.h>

int connect(int socket, struct sockaddr *address, int address_len);

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When reading a socket in python, is there any difference between os.read and socket.recv?

By : Christopher
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , line 1 uses the underlining file descriptor to read the socket, so it is platform-dependant. Use line 2, since it is a portable, multi-platform way of accomplishing the same thing.
Obligatory: If you're doing anything serious, it's better to avoid having to deal with low-level sockets. They are hard to get right, it may seem things are working but there are many details. Those details are already solved in many networking frameworks and there's no reason to reinvent the wheel. I suggest twisted, it is pretty good.

Replace the C socket API in C++ on z/OS

By : user3579318
Date : March 29 2020, 07:55 AM
I hope this helps you . check out the z/OS UNIX System Services sockets section in the z/OS XL C/C++ Programming Guide. Make sure you're including the necessary header files and using the appropriate #defines.

Is there a API to know current iOS/Mac is 64bit OS or 32 bit OS?

By : David Eng
Date : March 29 2020, 07:55 AM
around this issue In general, you can assume OS X is 64-bit based on the OS version. (more specifically the Cocoa version.)
More importantly, you have to ask yourself what you are trying to accomplish. In general, the Frameworks protect you from needing to think about this most of the time, especially in Objective-C land. If you stay in Objective-C land, you can go simple with macros: CGFLOAT_IS_DOUBLE (from CGGeometry.h)

How does Python access OS API functions such as socket()?

By : Hansjürg Jaggi
Date : March 29 2020, 07:55 AM
I wish this help you It has everything to do with the 1st and the 2nd lines from socket.py:
code :
import _socket
from _socket import *
import socket
print dir(socket)
print dir(socket._socket)
print socket
print socket._socket

Socket API: bind error: Socket operation on non-socket

By : user3259512
Date : March 29 2020, 07:55 AM
will help you I'm new to c and I am trying to learn the sockets api, but I got this error: Socket operation on non-socket from Bind , You are erasing the socket handle you just created via
code :
memset(&listenfd, 0, sizeof(listenfd));
memset(&servaddr, 0, sizeof(servaddr));
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