I need same help

abdobl · 09-25-2004, 05:27 PM

Hi All
I working in my project and I have same problem it to complicated to explain , but I will explain it in small Example :-
I use 2 computer run linux Red Hat 9 connected by using cross over link (client/server)
I need tow transfer huge data by using socket interface(with c)

My problem in the data was receive at client (recv function) the out put recive from buffer[0] to buffer[361] is OK after that the output of buffer[362-->50000] is 0
If any one has had a similar experience with this please tell me in detail
thank you

rjlee · 09-27-2004, 01:12 PM

recv() will read any data that there is to be read, and set its return value to the amount of data that has been read, in bytes. There is no guarentee that all of the data will be read at once (although you can modify the behaviour by changing the socket's file-descriptor flags with select()). You can also try the MSG_WAITALL flag to recv() but that still doesn't guarentee getting all of the data at once.

If an error has occurred, read() will set errno to the value of the error. You can test for errors with: (remember to use #include<errno.h> and #include<string.h>)

Code:

errno = 0;
if (len > recv(from,buffer,len,MSG_WAITALL)) {
   printf("Error: %s\n", strerror(errno);
}