diff options
| author | Alessandro Ghedini <alessandro@ghedini.me> | 2017-11-05 23:59:55 +0000 |
|---|---|---|
| committer | Daniel Stenberg <daniel@haxx.se> | 2017-11-24 10:49:59 +0100 |
| commit | 979b012eeb1908e7e3ad13c736fb1dbc73187780 (patch) | |
| tree | 2394f1bc436fbb337a666abc2daa5d5033a0d382 /lib/connect.c | |
| parent | 9f691be3d49840690f7d3a22e81e6fd3e03f0900 (diff) | |
connect: add support for new TCP Fast Open API on Linux
The new API added in Linux 4.11 only requires setting a socket option
before connecting, without the whole sento() machinery.
Notably, this makes it possible to use TFO with SSL connections on Linux
as well, without the need to mess around with OpenSSL (or whatever other
SSL library) internals.
Closes #2056
Diffstat (limited to 'lib/connect.c')
| -rw-r--r-- | lib/connect.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/lib/connect.c b/lib/connect.c index 45e18bc07..3edb71eb7 100644 --- a/lib/connect.c +++ b/lib/connect.c @@ -28,8 +28,10 @@ #ifdef HAVE_SYS_UN_H #include <sys/un.h> /* for sockaddr_un */ #endif -#ifdef HAVE_NETINET_TCP_H -#include <netinet/tcp.h> /* for TCP_NODELAY */ +#ifdef HAVE_LINUX_TCP_H +#include <linux/tcp.h> +#elif defined(HAVE_NETINET_TCP_H) +#include <netinet/tcp.h> #endif #ifdef HAVE_SYS_IOCTL_H #include <sys/ioctl.h> @@ -989,6 +991,9 @@ static CURLcode singleipconnect(struct connectdata *conn, char ipaddress[MAX_IPADR_LEN]; long port; bool is_tcp; +#ifdef TCP_FASTOPEN_CONNECT + int optval = 1; +#endif *sockp = CURL_SOCKET_BAD; @@ -1092,7 +1097,15 @@ static CURLcode singleipconnect(struct connectdata *conn, # else rc = connect(sockfd, &addr.sa_addr, addr.addrlen); # endif /* HAVE_BUILTIN_AVAILABLE */ -#elif defined(MSG_FASTOPEN) /* Linux */ +#elif defined(TCP_FASTOPEN_CONNECT) /* Linux >= 4.11 */ + if(setsockopt(sockfd, IPPROTO_TCP, TCP_FASTOPEN_CONNECT, + (void *)&optval, sizeof(optval)) < 0) + infof(data, "Failed to enable TCP Fast Open on fd %d\n", sockfd); + else + infof(data, "TCP_FASTOPEN_CONNECT set\n"); + + rc = connect(sockfd, &addr.sa_addr, addr.addrlen); +#elif defined(MSG_FASTOPEN) /* old Linux */ if(conn->given->flags & PROTOPT_SSL) rc = connect(sockfd, &addr.sa_addr, addr.addrlen); else |