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→Example: use source tag
Libsoccr is the library that does [[TCP connection]] checkpoint and restore. Currently it resides in criu source code (<code>soccr</code> subdirectory) and consists of an API header and a static library. Available since [[Download/criu/2.10|Waxwing release]].
Libsoccr is a library that does [[TCP connection]] checkpoint and restore.
Libsoccr resides in criu source code (<code>soccr</code> subdirectory) and consists of an API header and a static library.
Libsoccr is available since CRIU {{criu|2.10}} release.
== Overview ==
== Overview ==
[[Category: Sub-projects]]
[[Category: Sub-projects]]
[[Category: Sockets]]
[[Category: Sockets]]
== Example ==
<source lang="c">
/* Dump a tcp socket */
dst_let = sizeof(addr);
if (getsockname(sock, (struct sockaddr *) &addr, &dst_let)) {
pr_perror("connect");
return -1;
}
dst_let = sizeof(addr);
if (getpeername(sock, (struct sockaddr *) &dst, &dst_let)) {
pr_perror("connect");
return -1;
}
so = libsoccr_pause(sock);
dsize = libsoccr_save(so, &data, sizeof(data));
if (dsize < 0) {
pr_perror("libsoccr_save");
return -1;
}
close(sock);
/* Restore a tcp socket */
rst = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
if (rst == -1)
return -1;
so_rst = libsoccr_pause(rst);
libsoccr_set_addr(so_rst, 1, &addr, 0);
libsoccr_set_addr(so_rst, 0, &dst, 0);
queue = libsoccr_get_queue_bytes(so, TCP_RECV_QUEUE, SOCCR_MEM_EXCL);
libsoccr_set_queue_bytes(so_rst, TCP_RECV_QUEUE, queue, SOCCR_MEM_EXCL);
queue = libsoccr_get_queue_bytes(so, TCP_SEND_QUEUE, SOCCR_MEM_EXCL);
libsoccr_set_queue_bytes(so_rst, TCP_SEND_QUEUE, queue, SOCCR_MEM_EXCL);
ret = libsoccr_restore(so_rst, &data, dsize);
if (ret)
return -1;
libsoccr_resume(so_rst);
libsoccr_resume(so);
</source>