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TIBCO Rendezvous® 8.7.0

# tibrvMsgData_GetBytes()

Function

## Declaration

    tibrv_status tibrvMsgData_GetBytes(
        char**          buffer,
        const void**    src,
        tibrv_u32*      size);

## Purpose

Get data pointer and size from a wire buffer for a decoder.

## Remarks

This layer 1 function helps decoders extract data from a message’s wire buffer. It does these steps (see tibrvMsgData_GetBytes):

Procedure

| 1. | Read the size information from the wire buffer (starting at the position `*buffer`) and store it in the `size` parameter.

| 2. | Store the start position of the actual data in the `src` parameter.

| 3. | Advance `*buffer` to point to the end of the actual data.

| 4. | Return.

After tibrvMsgData_GetBytes() returns, the decoder can obtain the data by copying `*size` bytes from the location `*src`.

Parameter | Description
`buffer` | The decoder supplies the location of an address within the wire buffer of a source message. After reading the size information, this function advances `*buffer` to point to the location at the end of the data.
`src` | The decoder supplies the location of a buffer pointer. This function stores the address of the actual data in that pointer.
`size` | The decoder supplies a location. This function stores the size of the actual data in that location.

Figure 198: tibrvMsgData_GetBytes

## See Also

tibrvMsgData_Decoder

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