add udp_send_datagram

src/sockfun.cpp

@@ -25,34 +25,45 @@ bool validate_host_address(uint32_t host_addr);
 
 bool recv_data(SOCKET s, char *buf, size_t nbytes, bool accept_incomplete_packet, size_t *packet_size)
 {
-	ssize_t nret, nrecv = 0;
+    ssize_t nret, nrecv = 0;
     if (!buf || !nbytes) {
         return false;
     }
     do {
-		nret = recv(s, &buf[nrecv], ssize_t(nbytes)-nrecv, 0);
+        nret = recv(s, &buf[nrecv], ssize_t(nbytes)-nrecv, 0);
         if (nret > 0) {
             nrecv += nret;
         }
-	} while(nret != SOCKET_ERROR && !accept_incomplete_packet && (nrecv < int(nbytes)));
+    } while(nret != SOCKET_ERROR && !accept_incomplete_packet && (nrecv < int(nbytes)));
     if (accept_incomplete_packet) {
         if (packet_size)
             *packet_size = nrecv;
         return (nrecv > 0);
     }
     else {
-		return (nrecv == int(nbytes));
+        return (nrecv == int(nbytes));
     }
 }
 
 bool send_data(SOCKET s, const char *buf, size_t nbytes)
 {
-	ssize_t nret;
+    ssize_t nret;
     if (!buf || !nbytes) {
         return false;
     }
-	nret = send(s, buf, ssize_t(nbytes), 0);
-	return (nret == ssize_t(nbytes));
+    nret = send(s, buf, ssize_t(nbytes), 0);
+    return (nret == ssize_t(nbytes));
+}
+
+bool udp_send_datagram(SOCKET s, char *buf, int length, sockaddr_in *send_addr)
+{
+    int nret;
+    int tolen = sizeof(sockaddr_in);
+    if (!buf || !length) {
+        return false;
+    }
+    nret = sendto(s, buf, length, 0, reinterpret_cast<struct sockaddr*>(send_addr), tolen);
+    return (nret == length);
 }
 
 bool udp_recv_datagram(SOCKET s, char *buf, size_t max_length, size_t *datagram_size, sockaddr_in *from_addr)
@@ -64,7 +75,7 @@ bool udp_recv_datagram(SOCKET s, char *buf, size_t max_length, size_t *datagram_
     if (s == INVALID_SOCKET) {
         return false;
     }
-	nret = recvfrom(s, buf, ssize_t(max_length), 0, reinterpret_cast<struct sockaddr*>(&from_addr_l), &from_size);
+    nret = recvfrom(s, buf, ssize_t(max_length), 0, reinterpret_cast<struct sockaddr*>(&from_addr_l), &from_size);
     if (nret > 0)
     {
         if (from_addr) {