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added basic "consumer" example

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Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
This commit is contained in:
Toni Uhlig
2020-08-04 16:15:21 +02:00
parent 3fd32fb337
commit 0004753eb1
2 changed files with 61 additions and 4 deletions
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13
Makefile
View File

@@ -1,5 +1,5 @@
CC = gcc CC = gcc
PROJECT_CFLAGS += -Wall -Wextra $(EXTRA_CFLAGS) PROJECT_CFLAGS += -Wall -Wextra $(EXTRA_CFLAGS) -I.
LIBS += -pthread -lpcap -lm LIBS += -pthread -lpcap -lm
ifneq ($(CUSTOM_LIBNDPI),) ifneq ($(CUSTOM_LIBNDPI),)
@@ -37,14 +37,19 @@ RM = rm -f
all: nDPId nDPIsrvd all: nDPId nDPIsrvd
examples: examples/c-json-stdout/c-json-stdout
nDPId: help nDPId.c nDPId: help nDPId.c
$(CC) $(PROJECT_CFLAGS) $(CFLAGS) nDPId.c -o $@ $(LDFLAGS) $(LIBS) $(CC) $(PROJECT_CFLAGS) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LIBS)
nDPIsrvd: nDPIsrvd.c nDPIsrvd: nDPIsrvd.c
$(CC) $(PROJECT_CFLAGS) $(CFLAGS) nDPIsrvd.c -o $@ $(LDFLAGS) $(LIBS) $(CC) $(PROJECT_CFLAGS) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LIBS)
examples/c-json-stdout/c-json-stdout:
$(CC) $(PROJECT_CFLAGS) $(CFLAGS) $@.c -o $@ $(LDFLAGS) $(LIBS)
clean: clean:
$(RM) -f nDPId nDPIsrvd $(RM) -f nDPId nDPIsrvd examples/c-json-stdout/c-json-stdout
help: help:
@echo 'CC = $(CC)' @echo 'CC = $(CC)'

52
examples/c-json-stdout/c-json-stdout.c Normal file
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@@ -0,0 +1,52 @@
#include <arpa/inet.h>
#include <errno.h>
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <unistd.h>
#include "config.h"
#include "jsmn/jsmn.h"
static char serv_listen_addr[INET_ADDRSTRLEN] = DISTRIBUTOR_HOST;
static uint16_t serv_listen_port = DISTRIBUTOR_PORT;
int main(void)
{
int sockfd = socket(AF_INET, SOCK_STREAM, 0);
struct sockaddr_in remote_addr = {};
socklen_t remote_addrlen = sizeof(remote_addr);
uint8_t buf[BUFSIZ];
//size_t buf_used = 0;
//unsigned long long int buf_wanted = 0;
if (sockfd < 0) {
perror("socket");
return 1;
}
remote_addr.sin_family = AF_INET;
if (inet_pton(AF_INET, &serv_listen_addr[0], &remote_addr.sin_addr) != 1) {
perror("inet_pton");
return 1;
}
remote_addr.sin_port = htons(serv_listen_port);
if (connect(sockfd, (struct sockaddr *) &remote_addr, remote_addrlen) != 0) {
perror("connect");
return 1;
}
while (1) {
errno = 0;
ssize_t bytes_read = read(sockfd, buf, sizeof(buf));
if (bytes_read <= 0 || errno != 0) {
break;
}
printf("RECV[%zd]: '%.*s'\n", bytes_read, (int) bytes_read, buf);
}
return 0;
}