nmxptool.c

/*! \file
 *
 * \brief Nanometrics Protocol Tool
 *
 * Author:
 * 	Matteo Quintiliani
 * 	Istituto Nazionale di Geofisica e Vulcanologia - Italy
 *	quintiliani@ingv.it
 *
 * $Id: nmxptool.c,v 1.207 2008-11-07 22:44:25 mtheo Exp $
 *
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <signal.h>

#include <sys/stat.h>
#include <unistd.h>

#include <nmxp.h>
#include "nmxptool_getoptlong.h"
#include "nmxptool_chanseq.h"
#include "nmxptool_sigcondition.h"
#include <nmxptool_listen.h>

#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#else
#warning Requests of channels could not be efficient because they do not use a separate thread. 
#endif

#ifdef HAVE_WINDOWS_H
#include <windows.h>
#endif

#ifdef HAVE_EARTHWORMOBJS
#include "nmxptool_ew.h"
#endif

#ifdef HAVE_LIBMSEED
#include <libmseed.h>
#endif

#ifdef HAVE___SRC_SEEDLINK_PLUGIN_H
#include "seedlink_plugin.h"
#endif

#define TIMES_FLOW_EXIT 100

int if_dap_condition_only_one_time = 0;

#define DAP_CONDITION(params_struct) ( params_struct.start_time != 0.0 || params_struct.delay > 0 )
#define EXIT_CONDITION (!nmxptool_sigcondition_read()  &&  !ew_check_flag_terminate  &&  !if_dap_condition_only_one_time)

#define CURRENT_NETWORK ( (params.network)? params.network : DEFAULT_NETWORK )
#define NETCODE_OR_CURRENT_NETWORK ( (network_code[0] != 0)? network_code : CURRENT_NETWORK )

static void ShutdownHandler(int sig);
static void AlarmHandler(int sig);

void flushing_raw_data_stream();

void *nmxptool_print_info_raw_stream(void *arg);
int nmxptool_print_seq_no(NMXP_DATA_PROCESS *pd);
void nmxptool_str_time_to_filename(char *str_time);

#ifdef HAVE_LIBMSEED
int nmxptool_write_miniseed(NMXP_DATA_PROCESS *pd);
int nmxptool_log_miniseed(const char *s);
int nmxptool_logerr_miniseed(const char *s);
#endif

#ifdef HAVE___SRC_SEEDLINK_PLUGIN_C
int nmxptool_send_raw_depoch(NMXP_DATA_PROCESS *pd);
#endif

#ifdef HAVE_PTHREAD_H
pthread_t thread_request_channels;
pthread_attr_t attr_request_channels;
void *status_thread;
void *p_nmxp_sendAddTimeSeriesChannel(void *arg);
#endif

#ifdef HAVE_PTHREAD_H
pthread_t thread_socket_listen;
pthread_attr_t attr_socket_listen;
void *status_thread_socket_listen;
int already_listen = 0;
#endif


/* Global variable for main program and handling terminitation program */
NMXPTOOL_PARAMS params;
int naqssock = 0;
FILE *outfile = NULL;
NMXP_CHAN_LIST *channelList = NULL;
NMXP_CHAN_LIST_NET *channelList_subset = NULL;
NMXP_CHAN_LIST_NET *channelList_subset_waste = NULL;
NMXPTOOL_CHAN_SEQ *channelList_Seq = NULL;
NMXP_META_CHAN_LIST *meta_channelList = NULL;
int n_func_pd = 0;
int (*p_func_pd[NMXP_MAX_FUNC_PD]) (NMXP_DATA_PROCESS *);


#ifdef HAVE_LIBMSEED
/* Mini-SEED variables */
NMXP_DATA_SEED data_seed;
MSRecord *msr_list_chan[MAX_N_CHAN];
#endif

int ew_check_flag_terminate = 0;

#ifdef HAVE_WINDOWS_H
const char sepdir = '\\';
#else
const char sepdir = '/';
#endif

#ifdef HAVE_MKDIR
/* TODO */
#endif
int mkdirp(const char *filename, mode_t mode) {
    char *dir = strdup(filename);
    int i, l;
    int	error=0;

    if(!filename) return -1;
    dir = strdup(filename);
    if(!dir) return -1;

    l = strlen(dir);
    i = 0;
    while(i < l  &&  error != -1) {
	if(dir[i] == sepdir  &&  i > 0) {
	    dir[i] = 0;
	    /* nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_ANY, "trying to create %s...\n", dir); */
	    if(chdir(dir) == -1) {
		error=mkdir(dir, mode);
	    }
	    dir[i] = sepdir;
	}
	i++;
    }
    if(error != -1) {
	error=mkdir(dir, mode);
    }

    free(dir);
    return error;
}


int main (int argc, char **argv) {
    int32_t connection_time;
    int request_SOCKET_OK;
    int i_chan, cur_chan = 0;
    int to_cur_chan = 0;
    int request_chan;
    int exitpdscondition;
    int exitdapcondition;
    time_t timeout_for_channel;

    int span_interval = 10;
    int time_to_sleep = 0;

    char str_start_time[200] = "";
    char str_end_time[200] = "";

    NMXP_MSG_SERVER type;
    void *buffer = NULL;
    int32_t length;
    int ret;
    int main_ret = 0;

    int pd_null_count = 0;
    int timeoutrecv_warning = 300; /* 5 minutes */

    int times_flow = 0;

    int recv_errno = 0;

    char dirseedchan[1024];
    char filename[500] = "";
    char station_code[20] = "", channel_code[20] = "", network_code[20] = "";

    char cur_after_start_time_str[1024];
    double cur_after_start_time = DEFAULT_BUFFERED_TIME;
    int skip_current_packet = 0;

    double default_start_time = 0.0;
    char start_time_str[30], end_time_str[30], default_start_time_str[30];

    NMXP_DATA_PROCESS *pd = NULL;

#ifndef HAVE_WINDOWS_H
    /* Signal handling, use POSIX calls with standardized semantics */
    struct sigaction sa;

    sa.sa_handler = AlarmHandler;
    sa.sa_flags = SA_RESTART;
    sigemptyset(&sa.sa_mask);
    sigaction(SIGALRM, &sa, NULL);

    sa.sa_handler = ShutdownHandler;
    sigaction(SIGINT, &sa, NULL);
    sigaction(SIGQUIT, &sa, NULL); 
    sigaction(SIGTERM, &sa, NULL);

    sa.sa_handler = SIG_IGN;
    sigaction(SIGHUP, &sa, NULL);
    sigaction(SIGPIPE, &sa, NULL); 
#else
    /* Signal handling, use function signal() */

    /*
    signal(SIGALRM, AlarmHandler);
    */

    signal(SIGINT, ShutdownHandler);
    /*
    signal(SIGQUIT, ShutdownHandler);
    */
    signal(SIGTERM, ShutdownHandler);

    /*
    signal(SIGHUP, SIG_IGN);
    signal(SIGPIPE, SIG_IGN);
    */
#endif

    nmxptool_sigcondition_init();

    /* Default is normal output */
    nmxp_log(NMXP_LOG_SET, NMXP_LOG_D_NULL);

    /* Initialize params from argument values */
    if(nmxptool_getopt_long(argc, argv, &params) != 0) {
	return 1;
    }

    if(params.ew_configuration_file) {

#ifdef HAVE_EARTHWORMOBJS

	nmxp_log_init(nmxptool_ew_logit_msg, nmxptool_ew_logit_err);

	nmxptool_ew_configure(argv, &params);

	/* Check consistency of params */
	if(nmxptool_check_params(&params) != 0) {
	    return 1;
	}

#else
	nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_ANY, "Earthworm feature has not been enabled in compilation!\n");
	return 1;
#endif

    } else {

	nmxp_log_init(nmxp_log_stdout, nmxp_log_stderr);

	/* Check consistency of params */
	if(nmxptool_check_params(&params) != 0) {
	    return 1;
	}

	/* List available channels on server */
	if(params.flag_listchannels) {

	    meta_channelList = nmxp_getMetaChannelList(params.hostname, params.portnumberdap, NMXP_DATA_TIMESERIES, params.flag_request_channelinfo, params.datas_username, params.datas_password, &channelList, nmxptool_sigcondition_read);

	    /* nmxp_meta_chan_print(meta_channelList); */
	    nmxp_meta_chan_print_with_match(meta_channelList, params.channels);

	    return 1;

	} else if(params.flag_listchannelsnaqs) {

	    channelList = nmxp_getAvailableChannelList(params.hostname, params.portnumberpds, NMXP_DATA_TIMESERIES, nmxptool_sigcondition_read);

	    /* nmxp_chan_print_channelList(channelList); */
	    nmxp_chan_print_channelList_with_match(channelList, params.channels);

	    return 1;

	}
    }

    nmxp_log(NMXP_LOG_SET, params.verbose_level);
    if(params.verbose_level != DEFAULT_VERBOSE_LEVEL) {
	nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_ANY, "verbose_level %d\n", params.verbose_level);
    }

#ifdef HAVE_LIBMSEED
    if(params.type_writeseed) {
	ms_loginit((void*)&nmxptool_log_miniseed, NULL, (void*)&nmxptool_logerr_miniseed, "error: ");
	/* Init mini-SEED variables */
	nmxp_data_seed_init(&data_seed);
    }
#endif

    nmxptool_log_params(&params);

    if(params.stc == -1) {

#ifndef HAVE_WINDOWS_H
	p_func_pd[n_func_pd++] = nmxptool_listen_print_seq_no;
#endif

	if(params.flag_logdata) {
	    p_func_pd[n_func_pd++] = nmxptool_print_seq_no;
	}

#ifdef HAVE_LIBMSEED
	/* Write Mini-SEED record */
	if(params.type_writeseed) {
	    p_func_pd[n_func_pd++] = nmxptool_write_miniseed;
	}
#endif

#ifdef HAVE___SRC_SEEDLINK_PLUGIN_C
	/* Send data to SeedLink Server */
	if(params.flag_slink) {
	    p_func_pd[n_func_pd++] = nmxptool_send_raw_depoch;
	}
#endif

#ifdef HAVE_EARTHWORMOBJS
	if(params.ew_configuration_file) {
	    p_func_pd[n_func_pd++] = nmxptool_ew_nmx2ew;
	}
#endif

    }

#ifdef HAVE_EARTHWORMOBJS
    if(params.ew_configuration_file) {
	nmxptool_ew_attach();
    }
#endif

    /* Exit only on request */
    while(EXIT_CONDITION) {

    NMXP_MEM_PRINT_PTR(0);

    /* Get list of available channels and get a subset list of params.channels */
    if( DAP_CONDITION(params) ) {
	if_dap_condition_only_one_time = 1;
	/* From DataServer */
	if(!nmxp_getMetaChannelList(params.hostname, params.portnumberdap, NMXP_DATA_TIMESERIES,
		    params.flag_request_channelinfo, params.datas_username, params.datas_password, &channelList, nmxptool_sigcondition_read)) {
	    return -1;
	}
    } else {
	/* From NaqsServer */
	channelList = nmxp_getAvailableChannelList(params.hostname, params.portnumberpds, NMXP_DATA_TIMESERIES, nmxptool_sigcondition_read);
    }

    if(!channelList) {
	nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CHANNEL, "Channel list has not been received!\n");
	return 1;
    }

    channelList_subset = nmxp_chan_subset(channelList, NMXP_DATA_TIMESERIES, params.channels, CURRENT_NETWORK);
    
    /* Free the complete channel list */
    if(channelList) {
	NMXP_MEM_FREE(channelList);
	channelList = NULL;
    }

    /* Check if some channel already exists */
    if(channelList_subset->number <= 0) {
	nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CHANNEL, "Channels not found!\n");
	return 1;
    } else {
	nmxp_chan_print_netchannelList(channelList_subset);

	nmxptool_chanseq_init(&channelList_Seq, channelList_subset->number, DEFAULT_BUFFERED_TIME, params.max_tolerable_latency, params.timeoutrecv);

#ifdef HAVE_LIBMSEED
	if(params.type_writeseed) {
	    nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA, "Init mini-SEED record list.\n");

	    /* Init mini-SEED record list */
	    for(i_chan = 0; i_chan < channelList_subset->number; i_chan++) {

		nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA,
			"Init mini-SEED record for %s\n", NMXP_LOG_STR(channelList_subset->channel[i_chan].name));

		msr_list_chan[i_chan] = msr_init(NULL);

		/* Separate station_code and channel_code */
		if(nmxp_chan_cpy_sta_chan(channelList_subset->channel[i_chan].name, station_code, channel_code, network_code)) {

		    nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA, "%s.%s.%s\n",
			    NMXP_LOG_STR(NETCODE_OR_CURRENT_NETWORK), NMXP_LOG_STR(station_code), NMXP_LOG_STR(channel_code));

		    strcpy(msr_list_chan[i_chan]->network, NETCODE_OR_CURRENT_NETWORK);
		    strcpy(msr_list_chan[i_chan]->station, station_code);
		    strcpy(msr_list_chan[i_chan]->channel, channel_code);

		    msr_list_chan[i_chan]->reclen = 512;         /* byte record length */
		    msr_list_chan[i_chan]->encoding = DE_STEIM1;  /* Steim 1 compression */

		} else {
		    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CHANNEL,
			    "Channels %s error in format!\n", NMXP_LOG_STR(channelList_subset->channel[i_chan].name));
		    return 1;
		}

	    }
	}
#endif

    }

    nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_CONNFLOW, "Begin communication.\n");

    times_flow = 0;
    recv_errno = 0;

    while(times_flow < 2  &&  recv_errno == 0 && !nmxptool_sigcondition_read()) {

	if(params.statefile) {
	    nmxptool_chanseq_load_states(channelList_subset, channelList_Seq, params.statefile);
	}

	if(times_flow == 0) {
	    if(params.statefile) {
		params.interval = DEFAULT_INTERVAL_INFINITE;
	    }
	} else if(times_flow == 1) {
	    params.start_time = 0.0;
	    params.end_time = 0.0;
	    params.interval = DEFAULT_INTERVAL_NO_VALUE;

	}

    /* Condition for starting DAP or PDS */
    if( DAP_CONDITION(params) ||
	    (times_flow == 0  &&  params.statefile && params.max_data_to_retrieve > 0 && params.interval == DEFAULT_INTERVAL_INFINITE) ) {

	nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_CONNFLOW, "Begin DAP Flow.\n");

	if(params.interval > 0  ||  params.interval == DEFAULT_INTERVAL_INFINITE) {
	    if(params.interval > 0) {
		params.end_time = params.start_time + params.interval;
	    } else {
		params.end_time = nmxp_data_gmtime_now();
	    }
	} else if(params.delay > 0) {
	    params.start_time = ((double) (time(NULL) - params.delay - span_interval) / 10.0) * 10.0;
	    params.end_time = params.start_time + span_interval;
	}


	/* ************************************************************** */
	/* Start subscription protocol "DATA ACCESS PROTOCOL" version 1.0 */
	/* ************************************************************** */

	/* DAP Step 1: Open a socket */
	if( (naqssock = nmxp_openSocket(params.hostname, params.portnumberdap, nmxptool_sigcondition_read)) == NMXP_SOCKET_ERROR) {
	    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CONNFLOW, "Error opening socket!\n");
	    return 1;
	}

	/* DAP Step 2: Read connection time */
	if(nmxp_readConnectionTime(naqssock, &connection_time) != NMXP_SOCKET_OK) {
	    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CONNFLOW, "Error reading connection time from server!\n");
	    return 1;
	}

	/* DAP Step 3: Send a ConnectRequest */
	if(nmxp_sendConnectRequest(naqssock, params.datas_username, params.datas_password, connection_time) != NMXP_SOCKET_OK) {
	    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CONNFLOW, "Error sending connect request!\n");
	    return 1;
	}

	/* DAP Step 4: Wait for a Ready message */
	if(nmxp_waitReady(naqssock) != NMXP_SOCKET_OK) {
	    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CONNFLOW, "Error waiting Ready message!\n");
	    return 1;
	}

	exitdapcondition = 1;

	default_start_time = (params.start_time > 0.0)? params.start_time : nmxp_data_gmtime_now() - params.max_data_to_retrieve;

	while(exitdapcondition  &&  !nmxptool_sigcondition_read()) {

	    /* Start loop for sending requests */
	    request_chan=0;
	    request_SOCKET_OK = NMXP_SOCKET_OK;

	    /* For each channel */
	    while(request_SOCKET_OK == NMXP_SOCKET_OK  &&  request_chan < channelList_subset->number  &&  exitdapcondition && !nmxptool_sigcondition_read()) {

		if(params.statefile) {
		    if(channelList_Seq[request_chan].after_start_time > 0) {
			params.start_time = channelList_Seq[request_chan].after_start_time;
			if(params.end_time - params.start_time > params.max_data_to_retrieve) {
			    nmxp_data_to_str(start_time_str, params.start_time);
			    nmxp_data_to_str(default_start_time_str, params.end_time - params.max_data_to_retrieve);
			    nmxp_log(NMXP_LOG_WARN, NMXP_LOG_D_ANY, "%s start_time changed from %s to %s\n",
				    NMXP_LOG_STR(channelList_subset->channel[request_chan].name),
				    NMXP_LOG_STR(start_time_str),
				    NMXP_LOG_STR(default_start_time_str));
			    params.start_time = params.end_time - params.max_data_to_retrieve;
			}
		    } else {
			params.start_time = default_start_time;
		    }
		    channelList_Seq[request_chan].last_time = params.start_time;
		    channelList_Seq[request_chan].significant = 1;

		}

		nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA, "nmxp_sendDataRequest %d %s (%d)\n",
			channelList_subset->channel[request_chan].key,
			NMXP_LOG_STR(channelList_subset->channel[request_chan].name),
			request_chan);

		nmxp_data_to_str(start_time_str, params.start_time);
		nmxp_data_to_str(end_time_str, params.end_time);
		nmxp_data_to_str(default_start_time_str, default_start_time);
		nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA, "%s start_time = %s - end_time = %s - (default_start_time = %s)\n",
			NMXP_LOG_STR(channelList_subset->channel[request_chan].name),
			NMXP_LOG_STR(start_time_str),
			NMXP_LOG_STR(end_time_str),
			NMXP_LOG_STR(default_start_time_str));

		/* DAP Step 5: Send Data Request */
		request_SOCKET_OK = nmxp_sendDataRequest(naqssock, channelList_subset->channel[request_chan].key, (int32_t) params.start_time, (int32_t) (params.end_time + 1.0));

		if(request_SOCKET_OK == NMXP_SOCKET_OK) {

		    nmxp_data_to_str(str_start_time, params.start_time);
		    nmxp_data_to_str(str_end_time, params.end_time);
		    nmxptool_str_time_to_filename(str_start_time);
		    nmxptool_str_time_to_filename(str_end_time);

		    if(params.flag_writefile) {
			/* Open output file */
			if(nmxp_chan_cpy_sta_chan(channelList_subset->channel[request_chan].name, station_code, channel_code, network_code)) {
			    sprintf(filename, "%s.%s.%s_%s_%s.nmx",
				    NETCODE_OR_CURRENT_NETWORK,
				    station_code,
				    channel_code,
				    str_start_time,
				    str_end_time);
			} else {
			    sprintf(filename, "%s_%s_%s.nmx",
				    channelList_subset->channel[request_chan].name,
				    str_start_time,
				    str_end_time);
			}

			outfile = fopen(filename, "w");
			if(!outfile) {
			    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_EXTRA, "Can not open file %s!\n",
				    NMXP_LOG_STR(filename));
			}
		    }

#ifdef HAVE_LIBMSEED
		    if(params.type_writeseed) {
			/* Open output Mini-SEED file */
			if(nmxp_chan_cpy_sta_chan(channelList_subset->channel[request_chan].name, station_code, channel_code, network_code)) {

			    if(params.type_writeseed == TYPE_WRITESEED_BUD) {
				sprintf(dirseedchan, "%s%c%s%c%s", params.outdirseed, sepdir,
					NETCODE_OR_CURRENT_NETWORK, sepdir,
					station_code);
			    } else {
				sprintf(dirseedchan, "%s%c%d%c%s%c%s%c%s.D", params.outdirseed, sepdir,
					nmxp_data_year_from_epoch(params.start_time), sepdir,
					NETCODE_OR_CURRENT_NETWORK, sepdir,
					station_code, sepdir,
					channel_code);
			    }

			    if(chdir(dirseedchan) == -1) {
				/* nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_EXTRA, "Directory %s does not exist!\n", dirseedchan); */

				if(mkdirp(dirseedchan, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH) == -1) {
				    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_EXTRA, "Directory %s has not been created!\n", dirseedchan);
				} else {
				    /* nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_ANY, "Directory %s created!\n", dirseedchan); */
				    if(chdir(dirseedchan) == -1) {
					/* ERROR */
					nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_EXTRA, "Directory %s should be created but it does not exist!\n", dirseedchan);
				    }
				}

			    } else {
				/* nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_ANY, "Directory %s exists!\n", dirseedchan); */
			    }


			    /*
			    sprintf(data_seed.filename_mseed, "%s.%s.%s_%s_%s.miniseed",
				    NETCODE_OR_CURRENT_NETWORK,
				    station_code,
				    channel_code,
				    str_start_time,
				    str_end_time);
				    */

			    /* TODO if the requested data covers different days
			     * filename contains also the year and the yday of the end time, this breaks both SDS and BUD structure */
			    if( ( nmxp_data_year_from_epoch(params.start_time) == nmxp_data_year_from_epoch(params.end_time) )
				    &&  ( nmxp_data_yday_from_epoch(params.start_time) == nmxp_data_yday_from_epoch(params.end_time)) ) {
				if(params.type_writeseed == TYPE_WRITESEED_BUD) {
				    sprintf(data_seed.filename_mseed, "%s.%s..%s.%d.%03d",
					    station_code,
					    NETCODE_OR_CURRENT_NETWORK,
					    channel_code,
					    nmxp_data_year_from_epoch(params.start_time),
					    nmxp_data_yday_from_epoch(params.start_time));
				} else {
				    sprintf(data_seed.filename_mseed, "%s.%s..%s.D.%d.%03d",
					    NETCODE_OR_CURRENT_NETWORK,
					    station_code,
					    channel_code,
					    nmxp_data_year_from_epoch(params.start_time),
					    nmxp_data_yday_from_epoch(params.start_time));
				}
			    } else {
				if(params.type_writeseed == TYPE_WRITESEED_BUD) {
				    sprintf(data_seed.filename_mseed, "%s.%s..%s.%d.%03d-%d.%03d",
					    station_code,
					    NETCODE_OR_CURRENT_NETWORK,
					    channel_code,
					    nmxp_data_year_from_epoch(params.start_time),
					    nmxp_data_yday_from_epoch(params.start_time),
					    nmxp_data_year_from_epoch(params.end_time),
					    nmxp_data_yday_from_epoch(params.end_time));
				} else {
				    sprintf(data_seed.filename_mseed, "%s.%s..%s.D.%d.%03d-%d.%03d",
					    NETCODE_OR_CURRENT_NETWORK,
					    station_code,
					    channel_code,
					    nmxp_data_year_from_epoch(params.start_time),
					    nmxp_data_yday_from_epoch(params.start_time),
					    nmxp_data_year_from_epoch(params.end_time),
					    nmxp_data_yday_from_epoch(params.end_time));
				}
			    }

			} else {
			    sprintf(filename, "%s_%s_%s.miniseed",
				    channelList_subset->channel[request_chan].name,
				    str_start_time,
				    str_end_time);
			}

			data_seed.outfile_mseed = fopen(data_seed.filename_mseed, "r");
			if(data_seed.outfile_mseed) {
			    nmxp_log(NMXP_LOG_WARN, NMXP_LOG_D_ANY, "File %s already exist. It will not be overrode.\n",
				    NMXP_LOG_STR(data_seed.filename_mseed));
			    fclose(data_seed.outfile_mseed);
			    data_seed.outfile_mseed = NULL;
			} else {

			data_seed.outfile_mseed = fopen(data_seed.filename_mseed, "w");
			if(!data_seed.outfile_mseed) {
			    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_EXTRA, "Can not open file %s!\n",
				    NMXP_LOG_STR(data_seed.filename_mseed));
			}

			}
		    }
#endif

		    if(params.flag_writefile  &&  outfile) {
			/* Compute SNCL line */

			/* Separate station_code_old_way and channel_code_old_way */
			if(nmxp_chan_cpy_sta_chan(channelList_subset->channel[request_chan].name, station_code, channel_code, network_code)) {
			    /* Write SNCL line */
			    fprintf(outfile, "%s.%s.%s.%s\n",
				    station_code,
				    NETCODE_OR_CURRENT_NETWORK,
				    channel_code,
				    (params.location)? params.location : "");
			}

		    }

		    /* DAP Step 6: Receive Data until receiving a Ready message */
		    ret = nmxp_receiveMessage(naqssock, &type, &buffer, &length, 0, &recv_errno);

		    nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_EXTRA, "ret = %d, type = %d, length = %d, recv_errno = %d\n",
			    ret, type, length, recv_errno);

		    while(ret == NMXP_SOCKET_OK   &&    type != NMXP_MSG_READY) {

			/* Process a packet and return value in NMXP_DATA_PROCESS structure */
			pd = nmxp_processCompressedData(buffer, length, channelList_subset, NETCODE_OR_CURRENT_NETWORK);
			nmxp_data_trim(pd, params.start_time, params.end_time, 0);

			/* To prevent to manage a packet with zero sample after nmxp_data_trim() */
			if(pd->nSamp > 0) {

			/* Log contents of last packet */
			if(params.flag_logdata) {
			    nmxp_data_log(pd, params.flag_logsample);
			}

			/* Set cur_chan */
			cur_chan = nmxp_chan_lookupKeyIndex(pd->key, channelList_subset);

			/* It is not the channel I have requested or error from nmxp_chan_lookupKeyIndex() */
			if(request_chan != cur_chan  &&  cur_chan != -1) {
			    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_ANY, "request_chan != cur_chan  %d != %d! (%d, %s) (%d, %s.%s.%s)\n",
				    request_chan, cur_chan,
				    channelList_subset->channel[request_chan].key,
				    NMXP_LOG_STR(channelList_subset->channel[request_chan].name),
				    pd->key, NMXP_LOG_STR(pd->network), NMXP_LOG_STR(pd->station), NMXP_LOG_STR(pd->channel));
			} else {

			/* Management of gaps */
			nmxptool_chanseq_gap(&(channelList_Seq[cur_chan]), pd);

#ifdef HAVE_LIBMSEED
			/* Write Mini-SEED record */
			if(params.type_writeseed) {
			    nmxptool_write_miniseed(pd);
			}
#endif

#ifdef HAVE___SRC_SEEDLINK_PLUGIN_C
			/* Send data to SeedLink Server */
			if(params.flag_slink) {
			    nmxptool_send_raw_depoch(pd);
			}
#endif

#ifdef HAVE_EARTHWORMOBJS
			if(params.ew_configuration_file) {
			    nmxptool_ew_nmx2ew(pd);
			}
#endif

			if(params.flag_writefile  &&  outfile) {
			    /* Write buffer to the output file */
			    if(outfile && buffer && length > 0) {
				int32_t length_int = length;
				nmxp_data_swap_4b((int32_t *) &length_int);
				fwrite(&length_int, sizeof(length_int), 1, outfile);
				fwrite(buffer, length, 1, outfile);
			    }
			}

			/* Store x_1 */
			channelList_Seq[cur_chan].x_1 = pd->pDataPtr[pd->nSamp-1];

			}

			} else {
			    /* TODO: nSamp <= 0 */
			}


			/* Free pd->buffer */
			if(pd->buffer) {
			    NMXP_MEM_FREE(pd->buffer);
			    pd->buffer = NULL;
			}

			/* Receive Data */
			ret = nmxp_receiveMessage(naqssock, &type, &buffer, &length, 0, &recv_errno);
			/* nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_CONNFLOW, "ret = %d, type = %d\n", ret, type); */
		    }

		    if(params.flag_writefile  &&  outfile) {
			/* Close output file */
			fclose(outfile);
			outfile = NULL;
		    }

#ifdef HAVE_LIBMSEED
		    if(params.type_writeseed  &&  data_seed.outfile_mseed) {
			/* Close output Mini-SEED file */
			fclose(data_seed.outfile_mseed);
			data_seed.outfile_mseed = NULL;
		    }
#endif

		} else {
		    /* TODO: error message */
		}
		request_chan++;

#ifdef HAVE_EARTHWORMOBJS
		if(params.ew_configuration_file) {

		    /* Check if we are being asked to terminate */
		    if( (ew_check_flag_terminate = nmxptool_ew_check_flag_terminate()) ) {
			logit ("t", "nmxptool terminating on request\n");
			nmxptool_ew_send_error(NMXPTOOL_EW_ERR_TERMREQ, NULL, params.hostname);
			exitdapcondition = 0;
			times_flow = TIMES_FLOW_EXIT;
		    }

		    /* Check if we need to send heartbeat message */
		    nmxptool_ew_send_heartbeat_if_needed();

		}
#endif

	    }
	    /* DAP Step 7: Repeat steps 5 and 6 for each data request */

	    if(params.delay > 0) {
		time_to_sleep = (params.end_time - params.start_time) - (time(NULL) - (params.start_time + params.delay + span_interval));
		if(time_to_sleep >= 0) {
		    nmxp_sleep(time_to_sleep);
		} else {
		    nmxp_log(NMXP_LOG_ERR, NMXP_LOG_D_CONNFLOW, "time to sleep %d sec.\n", time_to_sleep);
		    nmxp_sleep(3);
		}
		params.start_time = params.end_time;
		params.end_time = params.start_time + span_interval;
	    } else {
		exitdapcondition = 0;
	    }

	} /* END while(exitdapcondition) */

	/* DAP Step 8: Send a Terminate message (optional) */
	nmxp_sendTerminateSubscription(naqssock, NMXP_SHUTDOWN_NORMAL, "Bye!");

	/* DAP Step 9: Close the socket */
	nmxp_closeSocket(naqssock);
	naqssock = 0;

	/* ************************************************************ */
	/* End subscription protocol "DATA ACCESS PROTOCOL" version 1.0 */
	/* ************************************************************ */

	nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_CONNFLOW, "End DAP Flow.\n");

    } else {

	nmxp_log(NMXP_LOG_NORM, NMXP_LOG_D_CONNFLOW, "Begin PDS Flow.\n");