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strace: caget vs caproto-get
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| # strace -e trace=network -f -E EPICS_CA_ADDR_LIST="1.2.3.4 5.6.7.8" -E EPICS_CA_AUTO_ADDR_LIST=NO /root/epics/base/bin/linux-x86_64/caget test:A | |
| strace: Process 540 attached | |
| [pid 540] +++ exited with 0 +++ | |
| strace: Process 541 attached | |
| strace: Process 542 attached | |
| [pid 539] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 | |
| [pid 539] connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| [pid 539] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 | |
| [pid 539] connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| [pid 539] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3 | |
| [pid 539] bind(3, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 | |
| [pid 539] getsockname(3, {sa_family=AF_INET, sin_port=htons(51951), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| strace: Process 543 attached | |
| [pid 539] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 4 | |
| [pid 539] setsockopt(4, SOL_IP, IP_MULTICAST_LOOP, [1], 4) = 0 | |
| [pid 539] setsockopt(4, SOL_IP, IP_MULTICAST_TTL, [1], 4) = 0 | |
| [pid 539] setsockopt(4, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0 | |
| [pid 539] bind(4, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 | |
| [pid 539] getsockname(4, {sa_family=AF_INET, sin_port=htons(48867), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| [pid 539] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 5 | |
| [pid 539] bind(5, {sa_family=AF_INET, sin_port=htons(5065), sin_addr=inet_addr("0.0.0.0")}, 16) = -1 EADDRINUSE (Address already in use) | |
| [pid 539] setsockopt(5, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 | |
| [pid 543] recvfrom(4, <unfinished ...> | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\2\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\2\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\3\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\3\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\4\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\4\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\5\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16) = 40 | |
| [pid 542] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\5\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| Channel connect timed out: 'test:A' not found. | |
| [pid 539] sendto(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16, 0, {sa_family=AF_INET, sin_port=htons(48867), sin_addr=inet_addr("127.0.0.1")}, 16) = 16 | |
| [pid 543] <... recvfrom resumed> "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 65551, 0, {sa_family=AF_INET, sin_port=htons(48867), sin_addr=inet_addr("127.0.0.1")}, [16]) = 16 | |
| [pid 543] +++ exited with 0 +++ | |
| [pid 542] +++ exited with 0 +++ | |
| strace: Process 544 attached | |
| [pid 541] +++ exited with 1 +++ | |
| [pid 544] +++ exited with 1 +++ | |
| +++ exited with 1 +++ |
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| # strace -e trace=network -f -E EPICS_CA_ADDR_LIST="1.2.3.4 5.6.7.8" -E EPICS_CA_AUTO_ADDR_LIST=YES /root/epics/base/bin/linux-x86_64/caget test:A | |
| strace: Process 520 attached | |
| [pid 520] +++ exited with 0 +++ | |
| strace: Process 521 attached | |
| strace: Process 522 attached | |
| [pid 519] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 | |
| [pid 519] connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| [pid 519] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 3 | |
| [pid 519] connect(3, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| [pid 519] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 3 | |
| [pid 519] bind(3, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 | |
| [pid 519] getsockname(3, {sa_family=AF_INET, sin_port=htons(51626), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| strace: Process 523 attached | |
| [pid 519] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 4 | |
| [pid 519] setsockopt(4, SOL_IP, IP_MULTICAST_LOOP, [1], 4) = 0 | |
| [pid 519] setsockopt(4, SOL_IP, IP_MULTICAST_TTL, [1], 4) = 0 | |
| [pid 519] setsockopt(4, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0 | |
| [pid 519] bind(4, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 | |
| [pid 519] getsockname(4, {sa_family=AF_INET, sin_port=htons(46486), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| [pid 519] socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP) = 5 | |
| [pid 519] bind(5, {sa_family=AF_INET, sin_port=htons(5065), sin_addr=inet_addr("0.0.0.0")}, 16) = -1 EADDRINUSE (Address already in use) | |
| [pid 519] setsockopt(5, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 | |
| [pid 523] recvfrom(4, <unfinished ...> | |
| [pid 522] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("172.17.255.255")}, 16) = 40 | |
| [pid 522] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("1.2.3.4")}, 16 <unfinished ...> | |
| [pid 523] <... recvfrom resumed> "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\23\310\0\0\377\377\377\377\0\0\0\1"..., 65551, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("172.17.0.2")}, [16]) = 40 | |
| [pid 522] <... sendto resumed> ) = 40 | |
| [pid 522] sendto(4, "\0\0\0\0\0\1\0\r\0\0\0\1\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\1\0\0\0\1"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("5.6.7.8")}, 16) = 40 | |
| strace: Process 524 attached | |
| strace: Process 525 attached | |
| [pid 523] socket(AF_INET, SOCK_STREAM, IPPROTO_TCP) = 5 | |
| [pid 523] setsockopt(5, SOL_TCP, TCP_NODELAY, [1], 4) = 0 | |
| [pid 523] setsockopt(5, SOL_SOCKET, SO_KEEPALIVE, [1], 4) = 0 | |
| [pid 521] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 6 | |
| [pid 521] connect(6, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110 <unfinished ...> | |
| [pid 523] getsockopt(5, SOL_SOCKET, SO_SNDBUF, [16384], [4]) = 0 | |
| [pid 521] <... connect resumed> ) = -1 ENOENT (No such file or directory) | |
| [pid 523] recvfrom(4, <unfinished ...> | |
| [pid 521] socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 6 | |
| [pid 521] connect(6, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110 <unfinished ...> | |
| [pid 524] connect(5, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("172.17.0.2")}, 16 <unfinished ...> | |
| [pid 521] <... connect resumed> ) = -1 ENOENT (No such file or directory) | |
| [pid 524] <... connect resumed> ) = 0 | |
| [pid 524] recvfrom(5, "\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0\0", 16384, 0, NULL, NULL) = 16 | |
| [pid 524] recvfrom(5, <unfinished ...> | |
| [pid 525] sendto(5, "\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0\0\0\24\0\10\0\0\0\0\0\0\0\0\0\0\0\0"..., 96, 0, NULL, 0) = 96 | |
| [pid 524] <... recvfrom resumed> "\0\26\0\0\0\0\0\0\0\0\0\1\0\0\0\3\0\22\0\0\0\6\0\1\0\0\0\1\0\0\0\f", 16384, 0, NULL, NULL) = 32 | |
| [pid 525] sendto(5, "\0\17\0\0\0\24\0\1\0\0\0\f\0\0\0\1", 16, 0, NULL, 0) = 16 | |
| [pid 524] recvfrom(5, "\0\17\0\30\0\24\0\1\0\0\0\1\0\0\0\1\0\21\0\3\0\0\0\0\0\0\0\0\0\0\0\f"..., 16384, 0, NULL, NULL) = 40 | |
| [pid 524] recvfrom(5, test:A 0 | |
| <unfinished ...> | |
| [pid 519] sendto(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16, 0, {sa_family=AF_INET, sin_port=htons(46486), sin_addr=inet_addr("127.0.0.1")}, 16) = 16 | |
| [pid 523] <... recvfrom resumed> "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 65551, 0, {sa_family=AF_INET, sin_port=htons(46486), sin_addr=inet_addr("127.0.0.1")}, [16]) = 16 | |
| [pid 523] +++ exited with 0 +++ | |
| [pid 525] sendto(5, "\0\f\0\0\0\0\0\0\0\0\0\f\0\0\0\1", 16, 0, NULL, 0) = 16 | |
| [pid 524] <... recvfrom resumed> "\0\f\0\0\0\0\0\0\0\0\0\f\0\0\0\1", 16384, 0, NULL, NULL) = 16 | |
| [pid 525] shutdown(5, SHUT_WR) = 0 | |
| [pid 524] recvfrom(5, "", 16384, 0, NULL, NULL) = 0 | |
| [pid 524] +++ exited with 0 +++ | |
| [pid 525] +++ exited with 0 +++ | |
| [pid 522] +++ exited with 0 +++ | |
| strace: Process 528 attached | |
| [pid 528] +++ exited with 0 +++ | |
| [pid 521] +++ exited with 0 +++ | |
| +++ exited with 0 +++ |
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| # strace -e trace=network -f -E EPICS_CA_ADDR_LIST="1.2.3.4 5.6.7.8" -E EPICS_CA_AUTO_ADDR_LIST=YES caproto-get test:A | |
| /usr/local/lib/python3.6/dist-packages/caproto/_utils.py:246: UserWarning: EPICS_CA_ADDR_LIST is set but will be ignored because EPICS_CA_AUTO_ADDR_LIST is not set to 'no'. EPICS_CA_ADDR_LIST='1.2.3.4 5.6.7.8' EPICS_CA_AUTO_ADDR_LIST='YES' | |
| result.get('EPICS_CA_AUTO_ADDR_LIST', '')) | |
| socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC, IPPROTO_UDP) = 3 | |
| bind(3, {sa_family=AF_INET, sin_port=htons(5065), sin_addr=inet_addr("0.0.0.0")}, 16) = -1 EADDRINUSE (Address already in use) | |
| getsockname(3, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| getpeername(3, 0x7ffe6da768b0, [16]) = -1 ENOTCONN (Transport endpoint is not connected) | |
| socket(AF_INET, SOCK_DGRAM|SOCK_CLOEXEC, IPPROTO_IP) = 3 | |
| setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 | |
| setsockopt(3, SOL_SOCKET, SO_BROADCAST, [1], 4) = 0 | |
| setsockopt(3, SOL_SOCKET, SO_REUSEPORT, [1], 4) = 0 | |
| getsockname(3, {sa_family=AF_INET, sin_port=htons(0), sin_addr=inet_addr("0.0.0.0")}, [16]) = 0 | |
| sendto(3, "\0\30\0\0\0\0\0\0\0\0\0\0\0\0\0\0", 16, 0, {sa_family=AF_INET, sin_port=htons(5065), sin_addr=inet_addr("255.255.255.255")}, 16) = 16 | |
| sendto(3, "\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0\0\0\6\0\10\0\5\0\r\0\0\0\0\0\0\0\0"..., 40, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("255.255.255.255")}, 16) = 40 | |
| recvfrom(3, "\0\21\0\0\0\0\0\0\0\0\0\0\254\21\0\2", 65519, 0, {sa_family=AF_INET, sin_port=htons(5065), sin_addr=inet_addr("172.17.0.2")}, [16]) = 16 | |
| recvfrom(3, "\0\0\0\0\0\1\0\r\0\0\0\0\0\0\0\0\0\6\0\10\23\310\0\0\377\377\377\377\0\0\0\0"..., 65519, 0, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("172.17.0.2")}, [16]) = 40 | |
| socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_TCP) = 4 | |
| connect(4, {sa_family=AF_INET, sin_port=htons(5064), sin_addr=inet_addr("172.17.0.2")}, 16) = -1 EINPROGRESS (Operation now in progress) | |
| getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0 | |
| getsockname(4, {sa_family=AF_INET, sin_port=htons(39366), sin_addr=inet_addr("172.17.0.2")}, [16]) = 0 | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16 | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\25\0\20\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=16}, {iov_base="", iov_len=0}, {iov_base="42394f05b01b\0\0\0\0", iov_len=16}], msg_iovlen=3, msg_controllen=0, msg_flags=0}, 0) = 32 | |
| socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5 | |
| connect(5, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0) = 5 | |
| connect(5, {sa_family=AF_UNIX, sun_path="/var/run/nscd/socket"}, 110) = -1 ENOENT (No such file or directory) | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\24\0\10\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=16}, {iov_base="", iov_len=0}, {iov_base="root\0\0\0\0", iov_len=8}], msg_iovlen=3, msg_controllen=0, msg_flags=0}, 0) = 24 | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\22\0\10\0\0\0\0\0\0\0\0\0\0\0\r", iov_len=16}, {iov_base="", iov_len=0}, {iov_base="test:A\0\0", iov_len=8}], msg_iovlen=3, msg_controllen=0, msg_flags=0}, 0) = 24 | |
| recvfrom(4, "\0\0\0\0\0\0\0\r\0\0\0\0\0\0\0\0\0\26\0\0\0\0\0\0\0\0\0\0\0\0\0\3"..., 4096, 0, NULL, NULL) = 48 | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\17\0\0\0\6\0\0\0\0\0\r\0\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16 | |
| recvfrom(4, "\0\17\0\10\0\6\0\1\0\0\0\1\0\0\0\0\0\0\0\0\0\0\0\0", 4096, 0, NULL, NULL) = 24 | |
| sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\0\f\0\0\0\0\0\0\0\0\0\r\0\0\0\0", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16 | |
| test:A [0] | |
| +++ exited with 0 +++ |
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| FROM hhslepicka/epics-devel | |
| RUN apt-get update && apt-get install -y python3-pip strace tmux | |
| RUN python3 -m pip install caproto | |
| # docker run -it container /bin/bash | |
| # tmux | |
| # echo "record(ai, "test:A") {}" > test.db | |
| # /root/epics/base/bin/linux-x86_64/softIoc -d test.db | |
| # echo "Settings: $EPICS_CA_ADDR_LIST $EPICS_CA_AUTO_ADDR_LIST"; strace -f -e trace=network /root/epics/base/bin/linux-x86_64/caget test:A |
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Calls correctly including environment variables would look like (not as in the above):