--- /dev/null
+/* $Id$ */
+
+/* gras_bandwidth - GRAS mecanism to do Bandwidth tests between to hosts */
+
+/* Authors: Martin Quinson */
+/* Copyright (C) 2003 the OURAGAN project. */
+
+/* This program is free software; you can redistribute it and/or modify it
+ under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <gras.h>
+
+/**
+ * BwExp_t:
+ *
+ * Description of a BW experiment (payload when asking an host to do a BW experiment with us)
+ */
+typedef struct {
+ unsigned int bufSize;
+ unsigned int expSize;
+ unsigned int msgSize;
+ unsigned int port; /* raw socket to use */
+} BwExp_t;
+
+static const DataDescriptor BwExp_Desc[] =
+ { SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(BwExp_t,bufSize)),
+ SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(BwExp_t,expSize)),
+ SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(BwExp_t,msgSize)),
+ SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(BwExp_t,port))};
+#define BwExp_Len 4
+
+/**
+ * SatExp_t:
+ *
+ * Description of a BW experiment (payload when asking an host to do a BW experiment with us)
+ */
+typedef struct {
+ unsigned int msgSize;
+ unsigned int timeout;
+ unsigned int port; /* raw socket to use */
+} SatExp_t;
+
+static const DataDescriptor SatExp_Desc[] =
+ { SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(SatExp_t,msgSize)),
+ SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(SatExp_t,timeout)),
+ SIMPLE_MEMBER(UNSIGNED_INT_TYPE, 1, offsetof(SatExp_t,port))};
+#define SatExp_Len 3
+
+
+/* Prototypes of local callbacks */
+int grasbw_cbBWHandshake(gras_msg_t *msg);
+int grasbw_cbBWRequest(gras_msg_t *msg);
+
+int grasbw_cbSatStart(gras_msg_t *msg);
+int grasbw_cbSatBegin(gras_msg_t *msg);
+
+/**** code ****/
+gras_error_t grasbw_register_messages(void) {
+ gras_error_t errcode;
+
+
+ if ( /* Bandwidth */
+ (errcode=gras_msgtype_register(GRASMSG_BW_REQUEST,"BW request",2,
+ msgHostDesc,msgHostLen,
+ BwExp_Desc,BwExp_Len)) ||
+ (errcode=gras_msgtype_register(GRASMSG_BW_RESULT, "BW result",2,
+ msgErrorDesc,msgErrorLen,
+ msgResultDesc,msgResultLen /* first=seconds, second=bw */)) ||
+
+ (errcode=gras_msgtype_register(GRASMSG_BW_HANDSHAKE, "BW handshake",1,
+ BwExp_Desc,BwExp_Len)) ||
+ (errcode=gras_msgtype_register(GRASMSG_BW_HANDSHAKED, "BW handshake ACK",1,
+ BwExp_Desc,BwExp_Len)) ||
+
+ /* Saturation */
+ (errcode=gras_msgtype_register(GRASMSG_SAT_START,"SAT_START",2,
+ msgHostDesc,msgHostLen,
+ SatExp_Desc,SatExp_Len)) ||
+ (errcode=gras_msgtype_register(GRASMSG_SAT_STARTED, "SAT_STARTED",1,
+ msgErrorDesc,msgErrorLen)) ||
+
+ (errcode=gras_msgtype_register(GRASMSG_SAT_BEGIN,"SAT_BEGIN",1,
+ SatExp_Desc,SatExp_Len)) ||
+ (errcode=gras_msgtype_register(GRASMSG_SAT_BEGUN, "SAT_BEGUN",2,
+ msgErrorDesc,msgErrorLen,
+ SatExp_Desc,SatExp_Len)) ||
+
+ (errcode=gras_msgtype_register(GRASMSG_SAT_END,"SAT_END",0)) ||
+ (errcode=gras_msgtype_register(GRASMSG_SAT_ENDED, "SAT_ENDED",1,
+ msgErrorDesc,msgErrorLen)) ||
+
+ (errcode=gras_msgtype_register(GRASMSG_SAT_STOP,"SAT_STOP",0)) ||
+ (errcode=gras_msgtype_register(GRASMSG_SAT_STOPPED, "SAT_STOPPED",1,
+ msgErrorDesc,msgErrorLen)) )
+ {
+
+ fprintf(stderr,"GRASBW: Unable register the messages (got error %s)\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+
+ if ((errcode=gras_cb_register(GRASMSG_BW_HANDSHAKE,-1,&grasbw_cbBWHandshake)) ||
+ (errcode=gras_cb_register(GRASMSG_BW_REQUEST,-1,&grasbw_cbBWRequest)) ||
+
+ (errcode=gras_cb_register(GRASMSG_SAT_START,-1,&grasbw_cbSatStart)) ||
+ (errcode=gras_cb_register(GRASMSG_SAT_BEGIN,-1,&grasbw_cbSatBegin)) ) {
+
+ fprintf(stderr,"GRASBW: Unable register the callbacks (got error %s)\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+
+ return no_error;
+}
+
+/* ***************************************************************************
+ * Bandwidth tests
+ * ***************************************************************************/
+/* Function to do a test from local to given host */
+gras_error_t grasbw_test(const char*to_name,unsigned int to_port,
+ unsigned int bufSize,unsigned int expSize,unsigned int msgSize,
+ /*OUT*/ double *sec, double *bw) {
+ gras_rawsock_t *rawIn,*rawOut;
+ gras_sock_t *sock;
+ gras_error_t errcode;
+ BwExp_t *request;
+ gras_msg_t *answer;
+
+ if((errcode=gras_sock_client_open(to_name,to_port,&sock))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while contacting peer\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+ if ((errcode=gras_rawsock_server_open(6666,8000,bufSize,&rawIn))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while opening a raw socket\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+
+ if (!(request=(BwExp_t *)malloc(sizeof(BwExp_t)))) {
+ fprintf(stderr,"grasbw_test(): Malloc error\n");
+ gras_sock_close(sock);
+ return malloc_error;
+ }
+ request->bufSize=bufSize;
+ request->expSize=expSize;
+ request->msgSize=msgSize;
+ request->port=gras_rawsock_get_peer_port(rawIn);
+
+ if ((errcode=gras_msg_new_and_send(sock,GRASMSG_BW_HANDSHAKE, 1,
+ request,1))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while sending the request.\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+ if ((errcode=gras_msg_wait(60,GRASMSG_BW_HANDSHAKED,&answer))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while waiting for the answer.\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+ if((errcode=gras_rawsock_client_open(to_name,gras_msg_ctn(answer,0,0,BwExp_t).port,
+ bufSize,&rawOut))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while opening the raw socket to %s:%d\n",
+ gras_error_name(errcode),to_name,gras_msg_ctn(answer,0,0,BwExp_t).port);
+ return errcode;
+ }
+
+ *sec=gras_time();
+ if ((errcode=gras_rawsock_send(rawOut,expSize,msgSize)) ||
+ (errcode=gras_rawsock_recv(rawIn,1,1,120))) {
+ fprintf(stderr,"grasbw_test(): Error %s encountered while sending the experiment.\n",
+ gras_error_name(errcode));
+ gras_rawsock_close(rawOut);
+ gras_rawsock_close(rawIn);
+ return errcode;
+ }
+ *sec = gras_time() - *sec;
+ *bw = ((double)expSize /* 8.0*/) / *sec / (1024.0 *1024.0);
+
+ gras_rawsock_close(rawIn);
+ gras_rawsock_close(rawOut);
+ gras_sock_close(sock);
+ gras_msg_free(answer);
+ return no_error;
+}
+
+/* Callback to the GRASMSG_BW_HANDSHAKE message:
+ opens a server raw socket,
+ indicate its port in an answer GRASMSG_BW_HANDSHAKED message,
+ receive the corresponding data on the raw socket,
+ close the raw socket
+*/
+int grasbw_cbBWHandshake(gras_msg_t *msg) {
+ gras_rawsock_t *rawIn,*rawOut;
+ BwExp_t *ans;
+ gras_error_t errcode;
+
+ if ((errcode=gras_rawsock_server_open(6666,8000,gras_msg_ctn(msg,0,0,BwExp_t).bufSize,&rawIn))) {
+ fprintf(stderr,"grasbw_cbHandshake(): Error %s encountered while opening a raw socket\n",
+ gras_error_name(errcode));
+ return 1;
+ }
+ if ((errcode=gras_rawsock_client_open(gras_sock_get_peer_name(msg->sock),gras_msg_ctn(msg,0,0,BwExp_t).port,
+ gras_msg_ctn(msg,0,0,BwExp_t).bufSize,&rawOut))) {
+ fprintf(stderr,"grasbw_cbHandshake(): Error %s encountered while opening a raw socket\n",
+ gras_error_name(errcode));
+ return 1;
+ }
+ if (!(ans=(BwExp_t *)malloc(sizeof(BwExp_t)))) {
+ fprintf(stderr,"grasbw_cbHandshake(): Malloc error.\n");
+ gras_rawsock_close(rawIn);
+ gras_rawsock_close(rawOut);
+ return 1;
+ }
+ ans->bufSize=gras_msg_ctn(msg,0,0,BwExp_t).bufSize;
+ ans->expSize=gras_msg_ctn(msg,0,0,BwExp_t).expSize;
+ ans->msgSize=gras_msg_ctn(msg,0,0,BwExp_t).msgSize;
+ ans->port=gras_rawsock_get_peer_port(rawIn);
+ // fprintf(stderr,"grasbw_cbHandshake. bufSize=%d expSize=%d msgSize=%d port=%d\n",
+ // ans->bufSize,ans->expSize,ans->msgSize,ans->port);
+
+ if ((errcode=gras_msg_new_and_send(msg->sock,GRASMSG_BW_HANDSHAKED, 1,
+ ans, 1))) {
+ fprintf(stderr,"grasbw_cbHandshake(): Error %s encountered while sending the answer.\n",
+ gras_error_name(errcode));
+ gras_rawsock_close(rawIn);
+ gras_rawsock_close(rawOut);
+ return 1;
+ }
+
+ if ((errcode=gras_rawsock_recv(rawIn,
+ gras_msg_ctn(msg,0,0,BwExp_t).expSize,
+ gras_msg_ctn(msg,0,0,BwExp_t).msgSize,
+ 120)) ||
+ (errcode=gras_rawsock_send(rawOut,1,1))) {
+ fprintf(stderr,"grasbw_cbHandshake(): Error %s encountered while receiving the experiment.\n",
+ gras_error_name(errcode));
+ gras_rawsock_close(rawIn);
+ gras_rawsock_close(rawOut);
+ return 1;
+ }
+ gras_msg_free(msg);
+ gras_rawsock_close(rawIn);
+ gras_rawsock_close(rawOut);
+ return 1;
+}
+
+/* function to request a BW test between to external hosts */
+gras_error_t grasbw_request(const char* from_name,unsigned int from_port,
+ const char* to_name,unsigned int to_port,
+ unsigned int bufSize,unsigned int expSize,unsigned int msgSize,
+ /*OUT*/ double *sec, double*bw) {
+
+ gras_sock_t *sock;
+ gras_msg_t *answer;
+ gras_error_t errcode;
+ /* The request */
+ BwExp_t *request;
+ msgHost_t *target;
+
+ if((errcode=gras_sock_client_open(from_name,from_port,&sock))) {
+ fprintf(stderr,"grasbw_request(): Error %s encountered while contacting the actuator\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+ if (!(request=(BwExp_t *)malloc(sizeof(BwExp_t))) ||
+ !(target=(msgHost_t*)malloc(sizeof(msgHost_t)))) {
+ fprintf(stderr,"grasbw_test(): Malloc error\n");
+ gras_sock_close(sock);
+ return malloc_error;
+ }
+
+ request->bufSize=bufSize;
+ request->expSize=expSize;
+ request->msgSize=msgSize;
+ strcpy(target->host,to_name);
+ target->port=to_port;
+
+ if ((errcode=gras_msg_new_and_send(sock,GRASMSG_BW_REQUEST, 2,
+ target,1,
+ request,1))) {
+ fprintf(stderr,"grasbw_request(): Error %s encountered while sending the request.\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+ if ((errcode=gras_msg_wait(240,GRASMSG_BW_RESULT,&answer))) {
+ fprintf(stderr,"grasbw_request(): Error %s encountered while waiting for the answer.\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
+ fprintf(stderr,"grasbw_request(): Peer reported error %s (%s).\n",
+ gras_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ // fprintf(stderr,"sec=%p",gras_msg_ctn(answer,1,0,msgResult_t));
+ *sec=gras_msg_ctn(answer,1,0,msgResult_t).value;
+ *bw=gras_msg_ctn(answer,1,1,msgResult_t).value;
+
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return no_error;
+}
+
+int grasbw_cbBWRequest(gras_msg_t *msg) {
+ /* specification of the test to run */
+ char* to_name=gras_msg_ctn(msg,0,0,msgHost_t).host;
+ unsigned int to_port=gras_msg_ctn(msg,0,0,msgHost_t).port;
+
+ unsigned int bufSize=gras_msg_ctn(msg,1,0,BwExp_t).bufSize;
+ unsigned int expSize=gras_msg_ctn(msg,1,0,BwExp_t).expSize;
+ unsigned int msgSize=gras_msg_ctn(msg,1,0,BwExp_t).msgSize;
+ /* our answer */
+ msgError_t *error;
+ msgResult_t *res;
+
+ if (!(error=(msgError_t *)malloc(sizeof(msgError_t))) ||
+ !(res=(msgResult_t *)malloc(sizeof(msgResult_t) * 2))) {
+ fprintf(stderr,"%s:%d:grasbw_cbRequest: Malloc error\n",__FILE__,__LINE__);
+ return malloc_error;
+ }
+
+ if ((error->errcode=grasbw_test(to_name,to_port,bufSize,expSize,msgSize,
+ &(res[0].value),&(res[1].value) ))) {
+ fprintf(stderr,
+ "%s:%d:grasbw_cbRequest: Error %s encountered while doing the test\n",
+ __FILE__,__LINE__,gras_error_name(error->errcode));
+ strncpy(error->errmsg,"Error within grasbw_test",ERRMSG_LEN);
+ gras_msg_new_and_send(msg->sock,GRASMSG_BW_RESULT,2,
+ error,1,
+ res,2);
+ return 1;
+ }
+ res[0].timestamp = (unsigned int) gras_time();
+ res[1].timestamp = (unsigned int) gras_time();
+ gras_msg_new_and_send(msg->sock,GRASMSG_BW_RESULT,2,
+ error,1,
+ res,2);
+ gras_msg_free(msg);
+ return 1;
+}
+
+/* ***************************************************************************
+ * Link saturation
+ * ***************************************************************************/
+
+gras_error_t grasbw_saturate_start(const char* from_name,unsigned int from_port,
+ const char* to_name,unsigned int to_port,
+ unsigned int msgSize, unsigned int timeout) {
+ gras_sock_t *sock;
+ gras_error_t errcode;
+ /* The request */
+ SatExp_t *request;
+ msgHost_t *target;
+ /* answer */
+ gras_msg_t *answer;
+
+ if((errcode=gras_sock_client_open(from_name,from_port,&sock))) {
+ fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while contacting peer\n",
+ __FILE__,__LINE__,gras_error_name(errcode));
+ return errcode;
+ }
+ if (!(request=(SatExp_t *)malloc(sizeof(SatExp_t))) ||
+ !(target=(msgHost_t*)malloc(sizeof(msgHost_t)))) {
+ fprintf(stderr,"%s:%d:saturate_start(): Malloc error\n",__FILE__,__LINE__);
+ gras_sock_close(sock);
+ return malloc_error;
+ }
+
+ request->timeout=timeout;
+ request->msgSize=msgSize;
+
+ strcpy(target->host,to_name);
+ target->port=to_port;
+
+ if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_START, 2,
+ target,1,
+ request,1))) {
+ fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while sending the request.\n",
+ __FILE__,__LINE__,gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+ if ((errcode=gras_msg_wait(120,GRASMSG_SAT_STARTED,&answer))) {
+ fprintf(stderr,"%s:%d:saturate_start(): Error %s encountered while waiting for the ACK.\n",
+ __FILE__,__LINE__,gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
+ fprintf(stderr,"%s:%d:saturate_start(): Peer reported error %s (%s).\n",
+ __FILE__,__LINE__,gras_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return no_error;
+}
+
+int grasbw_cbSatStart(gras_msg_t *msg) {
+ gras_rawsock_t *raw;
+ gras_sock_t *sock;
+ gras_error_t errcode;
+ double start; /* time to timeout */
+
+ /* specification of the test to run */
+ char* to_name=gras_msg_ctn(msg,0,0,msgHost_t).host;
+ unsigned int to_port=gras_msg_ctn(msg,0,0,msgHost_t).port;
+
+ unsigned int msgSize=gras_msg_ctn(msg,1,0,SatExp_t).msgSize;
+ unsigned int timeout=gras_msg_ctn(msg,1,0,SatExp_t).timeout;
+ unsigned int raw_port;
+
+ /* The request */
+ SatExp_t *request;
+ /* answer */
+ gras_msg_t *answer;
+
+ /*
+ fprintf(stderr,"grasbw_cbSatStart(sd=%p)\n",msg->sock);
+ fprintf(stderr,"(server=%d,raw=%d,fromPID=%d,toPID=%d,toHost=%p,toPort=%d,toChan=%d)\n",
+ msg->sock->server_sock,msg->sock->raw_sock,msg->sock->from_PID,
+ msg->sock->to_PID,msg->sock->to_host,msg->sock->to_port,msg->sock->to_chan);
+ */
+
+ /* Negociate the saturation with the peer */
+ if((errcode=gras_sock_client_open(to_name,to_port,&sock))) {
+ fprintf(stderr,"cbSatStart(): Error %s encountered while contacting peer\n",
+ gras_error_name(errcode));
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Cannot contact peer.\n");
+ return 1;
+ }
+ if (!(request=(SatExp_t *)malloc(sizeof(SatExp_t)))) {
+ fprintf(stderr,"cbSatStart(): Malloc error\n");
+ gras_sock_close(sock);
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ malloc_error,"Cannot build request.\n");
+ return 1;
+ }
+
+ request->timeout=gras_msg_ctn(msg,1,0,SatExp_t).timeout;
+ request->msgSize=gras_msg_ctn(msg,1,0,SatExp_t).msgSize;
+
+ if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_BEGIN, 1,
+ request,1))) {
+ fprintf(stderr,"cbSatStart(): Error %s encountered while sending the request.\n",
+ gras_error_name(errcode));
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Cannot send request.\n");
+ gras_sock_close(sock);
+ return 1;
+ }
+
+ if ((errcode=gras_msg_wait(120,GRASMSG_SAT_BEGUN,&answer))) {
+ fprintf(stderr,"cbSatStart(): Error %s encountered while waiting for the ACK.\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,
+ "Cannot receive the ACK.\n");
+ return 1;
+ }
+
+ if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
+ fprintf(stderr,"cbSatStart(): Peer reported error %s (%s).\n",
+ gras_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,
+ "Peer repported '%s'.\n",gras_msg_ctn(answer,0,0,msgError_t).errmsg);
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return 1;
+ }
+
+ raw_port=gras_msg_ctn(answer,1,0,SatExp_t).port;
+
+ if ((errcode=gras_rawsock_client_open(to_name,raw_port,msgSize,&raw))) {
+ fprintf(stderr,"cbSatStart(): Error %s while opening raw socket to %s:%d.\n",
+ gras_error_name(errcode),to_name,gras_msg_ctn(answer,1,0,SatExp_t).port);
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Cannot open raw socket.\n");
+ gras_sock_close(sock);
+ return 1;
+ }
+
+ /* send a train of data before repporting that XP is started */
+ if ((errcode=gras_rawsock_send(raw,msgSize,msgSize))) {
+ fprintf(stderr,"cbSatStart: Failure %s during raw send\n",gras_error_name(errcode));
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Cannot raw send.\n");
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ return 1;
+ }
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STARTED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ no_error,"Saturation started");
+ gras_msg_free(answer);
+ gras_msg_free(msg);
+
+ /* Do the saturation until we get a SAT_STOP message or until we timeout the whole XP*/
+ start=gras_time();
+ while (gras_msg_wait(0,GRASMSG_SAT_STOP,&msg)==timeout_error &&
+ gras_time()-start < timeout) {
+ if ((errcode=gras_rawsock_send(raw,msgSize,msgSize))) {
+ fprintf(stderr,"cbSatStart: Failure %s during raw send\n",gras_error_name(errcode));
+ /* our error message do not interess anyone. SAT_STOP will do nothing. */
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ return 1;
+ }
+ }
+ if (gras_time()-start > timeout) {
+ fprintf(stderr,"The saturation experiment did timeout. Stop it NOW\n");
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ return 1;
+ }
+
+ /* Handle the SAT_STOP which broke the previous while */
+
+ if ((errcode=gras_msg_new_and_send(sock, GRASMSG_SAT_END,0))) {
+ fprintf(stderr,"cbSatStart(): Cannot tell peer to stop saturation\n");
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Sending SAT_END to peer failed.\n");
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ return 1;
+ }
+
+ if ((errcode=gras_msg_wait(60,GRASMSG_SAT_ENDED,&answer))) {
+ fprintf(stderr,"cbSatStart(): Peer didn't ACK the end\n");
+
+ grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Receiving SAT_ENDED from peer failed.\n");
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ return 1;
+ }
+ grasRepportError(msg->sock,GRASMSG_SAT_STOPPED,1,
+ "cbSatStart: Severe error: Cannot send error status to requester!!\n",
+ no_error,"");
+
+ gras_sock_close(sock);
+ gras_rawsock_close(raw);
+ gras_msg_free(answer);
+ gras_msg_free(msg);
+
+ return 1;
+}
+
+int grasbw_cbSatBegin(gras_msg_t *msg) {
+ gras_rawsock_t *raw;
+ gras_error_t errcode;
+ double start; /* timer */
+ /* request */
+ unsigned int msgSize=gras_msg_ctn(msg,0,0,SatExp_t).msgSize;
+ unsigned int timeout=gras_msg_ctn(msg,0,0,SatExp_t).timeout;
+ /* answer */
+ SatExp_t *request;
+ msgError_t *error;
+
+ if (!(request=(SatExp_t*)malloc(sizeof(SatExp_t))) ||
+ !(error=(msgError_t *)malloc(sizeof(msgError_t)))) {
+ fprintf(stderr,"cbSatBegin(): Malloc error\n");
+ grasRepportError(msg->sock,GRASMSG_SAT_BEGUN,2,
+ "cbSatBegin: Severe error: Cannot send error status to requester!!\n",
+ malloc_error,"Malloc error");
+ return 1;
+ }
+
+ if ((errcode=gras_rawsock_server_open(6666,8000,msgSize,&raw))) {
+ fprintf(stderr,"cbSatBegin(): Error %s encountered while opening a raw socket\n",
+ gras_error_name(errcode));
+ grasRepportError(msg->sock,GRASMSG_SAT_BEGUN,2,
+ "cbSatBegin: Severe error: Cannot send error status to requester!!\n",
+ errcode,"Cannot open raw socket");
+ return 1;
+ }
+ request->port=gras_rawsock_get_peer_port(raw);
+ request->msgSize=msgSize;
+ error->errcode=no_error;
+ error->errmsg[0]='\0';
+ if ((errcode=gras_msg_new_and_send(msg->sock,GRASMSG_SAT_BEGUN,2,
+ error,1,
+ request,1))) {
+ fprintf(stderr,"cbSatBegin(): Error %s encountered while send ACK to peer\n",
+ gras_error_name(errcode));
+ return 1;
+ }
+ gras_msg_free(msg);
+
+ start=gras_time();
+ while (gras_msg_wait(0,GRASMSG_SAT_END,&msg)==timeout_error &&
+ gras_time() - start < timeout) {
+ errcode=gras_rawsock_recv(raw,msgSize,msgSize,1);
+ if (errcode != timeout_error && errcode != no_error) {
+ fprintf(stderr,"cbSatBegin: Failure %s during raw receive\n",gras_error_name(errcode));
+ /* our error message do not interess anyone. SAT_END will do nothing. */
+ /* (if timeout'ed, it may be because the sender stopped emission. so survive it) */
+ return 1;
+ }
+ }
+ if (gras_time()-start > timeout) {
+ fprintf(stderr,"The saturation experiment did timeout. Stop it NOW.\n");
+ gras_rawsock_close(raw);
+ return 1;
+ }
+
+ grasRepportError(msg->sock,GRASMSG_SAT_ENDED,1,
+ "cbSatBegin: Cannot send SAT_ENDED.\n",
+ no_error,"");
+ gras_rawsock_close(raw);
+ gras_msg_free(msg);
+ return 1;
+}
+
+gras_error_t grasbw_saturate_stop(const char* from_name,unsigned int from_port,
+ const char* to_name,unsigned int to_port) {
+ gras_error_t errcode;
+ gras_sock_t *sock;
+ gras_msg_t *answer;
+
+ if((errcode=gras_sock_client_open(from_name,from_port,&sock))) {
+ fprintf(stderr,"saturate_stop(): Error %s encountered while contacting peer\n",
+ gras_error_name(errcode));
+ return errcode;
+ }
+
+ if ((errcode=gras_msg_new_and_send(sock,GRASMSG_SAT_STOP,0))) {
+ fprintf(stderr,"saturate_stop(): Error %s encountered while sending request\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ if ((errcode=gras_msg_wait(120,GRASMSG_SAT_STOPPED,&answer))) {
+ fprintf(stderr,"saturate_stop(): Error %s encountered while receiving ACK\n",
+ gras_error_name(errcode));
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ if((errcode=gras_msg_ctn(answer,0,0,msgError_t).errcode)) {
+ fprintf(stderr,"saturate_stop(): Peer reported error %s (%s).\n",
+ gras_error_name(errcode),gras_msg_ctn(answer,0,0,msgError_t).errmsg);
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+ return errcode;
+ }
+
+ gras_msg_free(answer);
+ gras_sock_close(sock);
+
+ return no_error;
+}
