ProtocolSignature structure

Contains information about the first few bytes of a protocol send by a client

Syntax

typedef struct ProtocolSignature{
	int len;
	char buf[len];
} ProtocolSignature;

Members

len

The length, in bytes, of the buffer pointed to by the buf member.

buf

A buffer with the length of member len with the first few bytes of a protocol send by a client.

Example

This is an example of how to make a list of ProtocolSignature structures based on the HTTP protocol that supports the commands GET, POST and HEAD.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tvsserver_base.h"
#include "tvs_redefine_api_names.h"

#define AMMOUNT_OF_SUPPPORTED_COMMANDS 3

char* supportedCommands[AMMOUNT_OF_SUPPPORTED_COMMANDS] = {"GET", "POST", "HEAD"};

int main() {
	createProtocolSignatureFromArray(supportedCommands, AMMOUNT_OF_SUPPPORTED_COMMANDS);
}

char* createProtocolSignatureFromArray(char* p_array[], int ammountItems) {
	int bufSize, i, tmpLen;
	char* tmpBuf, *retBuf;

	//Calculate the size of every integer that will contain the size of the command (that last one is zero)
	bufSize = (ammountItems + 1) * sizeof(int);

	//Calculate the size of the buf members for the ProtocolSignature structure
	for(i=0; i<ammountItems; i++) {
		bufSize += strlen(p_array[i]);
	}

	//Allocate size for the ProtocolSignature structure
	retBuf = (char*) malloc(bufSize);

	tmpBuf = retBuf;
	//Copy every item with there size to the array
	for(i=0; i<ammountItems; i++) {
		tmpLen = strlen(p_array[i]);
		*(int*)tmpBuf = tmpLen;
		tmpBuf += sizeof(int);
		strcpy(tmpBuf, p_array[i]);
		tmpBuf += tmpLen;
	}

	*(int*)tmpBuf = 0;

	return retBuf;
}

Requirements

Minimum supported API	1.00
Header	tvsserver_base.h