Share this page

# lrs_get_user_buffer_size

Buffer Functions

Retrieves the size of the user data buffer.

    long lrs_get_user_buffer_size( char *s_desc );

s_desc | A descriptor identifying a socket.

The lrs_get_user_buffer_size function retrieves the size of the user data buffer for the specified socket.

## Return Values

If this function fails, it returns NULL. If it succeeds, it returns a pointer to the converted buffer. You can also retrieve the converted buffer using lrs_get_user_buffer.

## Parameterization

You cannot use standard parameterization for any arguments in this function.

## Example

In the following example, lrs_get_user_buffer_size retrieves the size of the user buffer, buf10 received on socket1 containing `\x17\x01X-AUTHENTICATION-1`.

Copy code

    char *UserBuf, *StrToLog;
    int LenOfUserBuf;
    lrs_get_static_buffer("socket1", "buf10", 0, -1, NULL);
    UserBuf = lrs_get_user_buffer("socket1");
    LenOfUserBuf = lrs_get_user_buffer_size("socket1");
    StrToLog = (char*)malloc(LenOfUserBuf + 1);
    /* Copy user buffer and skip two unprintable characters at the beginning */
    strncpy(StrToLog, UserBuf+2, LenOfUserBuf-2);
    lr_output_message("UserBuf = \"%s\"", StrToLog);
    lr_output_message("The buffer size = \"%d\"", LenOfUserBuf);

The output generated by the above code, as seen in the VuGen Execution log is:

Message from run.c(52): UserBuf = "X-AUTHENTICATION-1"
Message from run.c(52): The buffer size = 20

Tips to improve your search results... VuGen Function Reference Version 26.1-26.3 Function Reference 26.1-26.3 All View Local Help Center View Online Help Center Version: