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T: add a 'multi' tracer

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This tracer allows the connection of several tracers to one tracee.

To use the multi tracer:
- run the tracee as usual, eg. ./lte-softmodem -O xxxx.conf --T_stdout 0
- run the multi tracer: ./multi -d ../T_messages.txt
- connect other tracers to the multi tracer:
   - ./enb -d ../T_messages.txt -p 2022
   - ./textlog -d ../T_messages.txt -p 2022
   - etc.

By default the multi tracer connects to the tracee to the port 2021,
as for any other tracer.

Then it accepts connections from other tracers on the port 2022.

This can be changed with parameters on the command line.

The tracee and the other tracers can be stopped/started at any time.
This commit is contained in:
Cedric Roux
2018-08-08 15:41:39 +02:00
parent eb3b87d956
commit fdd4366daf
7 changed files with 443 additions and 21 deletions
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common/utils/T/tracer/utils.h
+3
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@@ -24,11 +24,14 @@ list *list_append(list *l, void *data);
#define DEFAULT_REMOTE_IP "127.0.0.1"
#define DEFAULT_REMOTE_PORT 2021
int create_listen_socket(char *addr, int port);
int socket_accept(int s);
/* socket_send: return 0 if okay, -1 on error */
int socket_send(int socket, void *buffer, int size);
int get_connection(char *addr, int port);
/* fullread: return length read if okay (that is: 'count'), -1 on error */
int fullread(int fd, void *_buf, int count);
int try_connect_to(char *addr, int port);
int connect_to(char *addr, int port);
/****************************************************************************/