camtrk-cli/netutil.cpp
7945766b149cmaster

netutil.cpp
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			#include "netutil.h"

			/**
			* \file netutil.cpp
			* \author Alessandro Crespi
			* \date April 2009
			* \brief Simple network utilities
			*/

			uint32_t gethostaddress(const char* hn)
			{
			struct hostent *hen;
			uint32_t addr;
			addr = inet_addr(hn);
			if (addr != INADDR_ANY && addr != INADDR_NONE) {
			return addr;
			}
			hen = gethostbyname(hn);
			if (hen != NULL) {
			if (sizeof(addr) != hen->h_length) {
			fprintf(stderr, "Internal error, address length mismatch.\n");
			_exit(2);
			}
			memcpy(&addr, hen->h_addr_list[0], hen->h_length);
			return addr;
			} else {
			return INADDR_NONE;
			}
			}

			// Receives a block of data of the specified size
			int block_recv(const int sk, uint8_t* data, unsigned int len)
			{
			int i, j;

			j = 0;

			while (len > 0) {
			i = recv(sk, (char*) data, len, 0);
			if (i==0 \|\| i==-1) {
			return -2;
			}
			data += i;
			len -= i;
			j += i;
			}

			return j;
			}