How do I enable adb tracing

I am intrested in viewing the packets sent by between adb client 开发者_如何学编程and adbd through usb. I tried setting the environment variable ADB_TRACE to 1. But when I run "adb shell" though the shell comes up, I am not able to see any traces. Any help will be appreciated thanks

Try adb logcat. That will show you the log.

Below patch should help you. More info is present at https://events.linuxfoundation.org/images/stories/pdf/lf_abs12_kobayashi.pdf

diff --git a/adb/adb.h b/adb/adb.h
index 622ca70..ecf9597 100644
--- a/adb/adb.h
+++ b/adb/adb.h
@@ -379,7 +379,7 @@ void adb_qemu_trace(const char* fmt, ...);
  extern unsigned char    adb_trace_output_count;
  void    adb_trace_init(void);

-#  define ADB_TRACING  ((adb_trace_mask & (1 << TRACE_TAG)) != 0)  
+#  define ADB_TRACING  1//((adb_trace_mask & (1 << TRACE_TAG)) != 0)

   /* you must define TRACE_TAG before using this macro */
#  define  D(...)                                      \
@@ -415,7 +415,7 @@ void adb_qemu_trace(const char* fmt, ...);
#endif


-#if !DEBUG_PACKETS
+#if 1//!DEBUG_PACKETS
 #define print_packet(tag,p) do {} while (0)
#endif

You just need to type some commands in the terminal:

adb kill-server
export ADB_TRACE=all
adb start-server