8 #define TRACE_NAME (app_name + "_TCP_listen_fd").c_str()
9 #include "artdaq/DAQdata/Globals.hh"
14 #include <sys/socket.h>
15 #include <netinet/in.h>
16 #include <arpa/inet.h>
27 struct sockaddr_in sin;
29 listener_fd = socket(PF_INET, SOCK_STREAM, 0);
30 if (listener_fd == -1)
32 TLOG(TLVL_ERROR) <<
"Could not open listen socket! Exiting with code 1!";
33 perror(
"socket error");
38 sts = setsockopt(listener_fd, SOL_SOCKET, SO_REUSEADDR, &opt,
sizeof(opt));
41 TLOG(TLVL_ERROR) <<
"Could not set SO_REUSEADDR! Exiting with code 2!";
42 perror(
"setsockopt SO_REUSEADDR");
46 bzero((
char *)&sin,
sizeof(sin));
47 sin.sin_family = AF_INET;
48 sin.sin_port = htons(port);
49 sin.sin_addr.s_addr = INADDR_ANY;
52 sts = bind(listener_fd, (
struct sockaddr *)&sin,
sizeof(sin));
55 TLOG(TLVL_ERROR) <<
"Could not bind socket for port " << port <<
"! Exiting with code 3!";
62 socklen_t arglen =
sizeof(len);
63 sts = getsockopt(listener_fd, SOL_SOCKET, SO_RCVBUF, &len, &arglen);
64 TLOG(TLVL_WARNING) <<
"RCVBUF initial: " << len <<
" sts/errno=" << sts <<
"/" << errno <<
" arglen=" << arglen <<
" rcvbuf=" << rcvbuf <<
" listener_fd=" << listener_fd;
68 sts = setsockopt(listener_fd, SOL_SOCKET, SO_RCVBUF, &len, arglen);
70 TLOG(TLVL_ERROR) <<
"Error with setsockopt SNDBUF " << errno;
72 sts = getsockopt(listener_fd, SOL_SOCKET, SO_RCVBUF, &len, &arglen);
73 if (len < (rcvbuf * 2))
74 TLOG(TLVL_WARNING) <<
"RCVBUF " << len <<
" not expected (" << rcvbuf <<
" sts/errno=" << sts <<
"/" << errno;
76 TLOG(TLVL_DEBUG) <<
"RCVBUF " << len <<
" sts/errno=" << sts <<
"/" << errno;
80 sts = listen(listener_fd, 5);
83 perror(
"listen error");
int TCP_listen_fd(int port, int rcvbuf)
Create a TCP listening socket on the given port and INADDR_ANY, with the given receive buffer...