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authorSerge Aleynikov <[email protected]>2015-10-26 14:46:54 +0100
committerIngela Anderton Andin <[email protected]>2015-10-26 14:54:51 +0100
commitafac3c7136c48d8630bd400c5454e146915e634f (patch)
tree47dc6a04cbfa817cefcc27114237ecffae7c43da /erts/emulator/drivers/common/inet_drv.c
parenta76cc1d337c0bf44ecefebeccac2d08e496ba7e8 (diff)
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erts: Add {line_delimiter, byte()} option to inet:setopts/2
A new {line_delimiter, byte()} option allows line-oriented TCP-based protocols to use a custom line delimiting character. It is to be used in conjunction with {packet, line}. This option also works with erlang:decode_packet/3 when its first argument is 'line'.
Diffstat (limited to 'erts/emulator/drivers/common/inet_drv.c')
-rw-r--r--erts/emulator/drivers/common/inet_drv.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/erts/emulator/drivers/common/inet_drv.c b/erts/emulator/drivers/common/inet_drv.c
index 89b71aa66a..a829599fe5 100644
--- a/erts/emulator/drivers/common/inet_drv.c
+++ b/erts/emulator/drivers/common/inet_drv.c
@@ -885,6 +885,7 @@ static int my_strncasecmp(const char *s1, const char *s2, size_t n)
#define INET_LOPT_MSGQ_LOWTRMRK 37 /* set local msgq low watermark */
#define INET_LOPT_NETNS 38 /* Network namespace pathname */
#define INET_LOPT_TCP_SHOW_ECONNRESET 39 /* tell user about incoming RST */
+#define INET_LOPT_LINE_DELIM 40 /* Line delimiting char */
/* SCTP options: a separate range, from 100: */
#define SCTP_OPT_RTOINFO 100
#define SCTP_OPT_ASSOCINFO 101
@@ -1154,6 +1155,7 @@ typedef struct {
#else
Uint32 send_oct[2]; /* number of octets sent, 64 bits */
#endif
+ char delimiter; /* Line delimiting character (def: '\n') */
unsigned long send_cnt; /* number of packets sent */
unsigned long send_max; /* maximum packet send */
double send_avg; /* average packet size sent */
@@ -6276,6 +6278,12 @@ static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
}
continue;
+ case INET_LOPT_LINE_DELIM:
+ DEBUGF(("inet_set_opts(%ld): s=%d, LINE_DELIM=%d\r\n",
+ (long)desc->port, desc->s, ival));
+ desc->delimiter = (char)ival;
+ continue;
+
case INET_OPT_REUSEADDR:
#ifdef __WIN32__
continue; /* Bjorn says */
@@ -8371,6 +8379,7 @@ static ErlDrvData inet_start(ErlDrvPort port, int size, int protocol)
desc->deliver = INET_DELIVER_TERM; /* standard term format */
desc->active = INET_PASSIVE; /* start passive */
desc->active_count = 0;
+ desc->delimiter = '\n'; /* line delimiting char */
desc->oph = NULL;
desc->opt = NULL;
@@ -9882,7 +9891,7 @@ static int tcp_remain(tcp_descriptor* desc, int* len)
tlen = packet_get_length(desc->inet.htype, ptr, n,
desc->inet.psize, desc->i_bufsz,
- &desc->http_state);
+ desc->inet.delimiter, &desc->http_state);
DEBUGF(("tcp_remain(%ld): s=%d, n=%d, nfill=%d nsz=%d, tlen %d\r\n",
(long)desc->inet.port, desc->inet.s, n, nfill, nsz, tlen));