Don't terminate connection on datagram sending issue in SOCKSv5 UDP ASSOCIATE

src/socks.c

@@ -208,7 +208,7 @@ void * sockschild(struct clientparam* param) {
 		*SAPORT(&param->sinsl) = 0;
 		if(so._bind(param->remsock,(struct sockaddr *)&param->sinsl,SASIZE(&param->sinsl)))RETURN (12);
 #if SOCKSTRACE > 0
-fprintf(stderr, "%hu binded to communicate with server\n", *SAPORT(&param->sins));
+fprintf(stderr, "%hu bound to communicate with server\n", *SAPORT(&param->sins));
 fflush(stderr);
 #endif
 	}
@@ -331,6 +331,7 @@ fflush(stderr);
 				param->sinsr = param->req;
 				myfree(buf);
 				if(!(buf = myalloc(LARGEBUFSIZE))) {RETURN(21);}
+				sin = param->sincr;
 
 				for(;;){
 					fds[0].fd = param->remsock;
@@ -387,10 +388,7 @@ fflush(stderr);
 
 						sasize = sizeof(param->sinsr);
 						if(len > (int)i){
-							if(socksendto(param->remsock, (struct sockaddr *)&param->sinsr, buf+i, len - i, conf.timeouts[SINGLEBYTE_L]*1000) <= 0){
-								param->res = 467;
-								break;
-							}
+							socksendto(param->remsock, (struct sockaddr *)&param->sinsr, buf+i, len - i, conf.timeouts[SINGLEBYTE_L]*1000);
 							param->statscli64+=(len - i);
 							param->nwrites++;
 #if SOCKSTRACE > 1
@@ -413,7 +411,7 @@ fflush(stderr);
 						sasize = sizeof(param->sinsr);
 						buf[0]=buf[1]=buf[2]=0;
 						buf[3]=(*SAFAMILY(&param->sinsl) == AF_INET)?1:4;
-						if((len = so._recvfrom(param->remsock, (char *)buf+6+SAADDRLEN(&param->sinsl), 65535 - 10, 0, (struct sockaddr *)&param->sinsr, &sasize)) <= 0) {
+						if((len = so._recvfrom(param->remsock, (char *)buf+6+SAADDRLEN(&param->sinsl), 65535 - (6+SAADDRLEN(&param->sinsl)), 0, (struct sockaddr *)&param->sinsr, &sasize)) <= 0) {
 							param->res = 468;
 							break;
 						}
@@ -422,10 +420,7 @@ fflush(stderr);
 						memcpy(buf+4, SAADDR(&param->sinsr), SAADDRLEN(&param->sinsr));
 						memcpy(buf+4+SAADDRLEN(&param->sinsr), SAPORT(&param->sinsr), 2);
 						sasize = sizeof(sin);
-						if(socksendto(param->clisock, (struct sockaddr *)&sin, buf, len + 6 + SAADDRLEN(&param->sinsr), conf.timeouts[SINGLEBYTE_L]*1000) <=0){
-							param->res = 469;
-							break;
-						}
+						socksendto(param->clisock, (struct sockaddr *)&sin, buf, len + 6 + SAADDRLEN(&param->sinsr), conf.timeouts[SINGLEBYTE_L]*1000);
 #if SOCKSTRACE > 1
 fprintf(stderr, "UDP packet relayed to client from %hu size %d\n",
 			ntohs(*SAPORT(&param->sinsr)),