thanks for you reply. this is gdb info
(gdb) frame 5 #5 0x00002ae1c4951e76 in build_local_reparse (Trans=0x2ae1c94524d8, branch=0, len=0x7ffe977ff370, method=0x2ae1c4a2399b "ACK", method_len=3, to=0x7ffe977ff130, reason=0x0) at t_msgbuilder.c:518 518 t_msgbuilder.c: 没有那个文件或目录. (gdb) p *to $1 = { s = 0xa75700 <buf.6868+26848> "To: "2002"sip:2002@172.18.67.42:55067;tag=670c2f03af90d102a11b20f011f4b096-d335\r\nFrom: "3001"sip:3001@172.18.67.42:55067;tag=c52db331\r\nCall-ID: OTRhY2IyZTU2ZDc3MWY2MWM3MGQ0Njc4YjBhOWRlOGY.\r\nCSeq: "..., len = 83} (gdb) info locals invite_buf = 0x2ae1c988bed8 "INVITE sip:2002@172.18.67.42 SIP/2.0\r\nRecord-Route: sip:172.18.67.32;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: sip:172.18.67.42;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: <sip:172.18.67.32;r2=on;lr=o"... invite_buf_end = 0x2ae1c988be90 "X\026" cancel_buf = 0x2ae1c93bf590 "ACK sip:2002@172.18.67.42 SIP/2.0\r\n\253" s = 0x2ae1c988befe "Record-Route: sip:172.18.67.32;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: sip:172.18.67.42;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: sip:172.18.67.32;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: <sip:1"... s1 = 0x2ae1c988bedf "sip:2002@172.18.67.42 SIP/2.0\r\nRecord-Route: sip:172.18.67.32;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: sip:172.18.67.42;r2=on;lr=on;ftag=c52db331\r\nRecord-Route: <sip:172.18.67.32;r2=on;lr=on;ftag="... d = 0x2ae1c93bf5b3 "\253" invite_len = -72 hf_type = -918215464 first_via = 1 to_len = 83 cancel_buf_len = 11 reason_len = 0 code_len = 0 reas1 = 0x0 reas_last = 0x0 hdr = 0x7ffe977ff1b0 hadded = 0 cenv = 0xada8e0 <_sr_cfgenv> __FUNCTION__ = "build_local_reparse"