sleeping goroutines

gistfile1.txt

	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc4274f4000, 0x61e52, 0x62000, 0xc4291d4000, 0x61e52, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc4274f4000, 0x61e52, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc4291d4000, 0x61e52)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3797 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc426370000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc426370000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc426370000, 0x61e52, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc426370000, 0x61e52, 0x62000, 0xc4291d4000, 0x61e52, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc426370000, 0x61e52, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc4291d4000, 0x61e52)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3810 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42328a000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42328a000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42328a000, 0x61e52, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42328a000, 0x61e52, 0x62000, 0xc4291d4000, 0x61e52, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42328a000, 0x61e52, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc4291d4000, 0x61e52)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3836 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42989e000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42989e000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42989e000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42989e000, 0x712e1, 0x72000, 0xc429366000, 0x712e1, 0x72000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42989e000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc429366000, 0x712e1)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3860 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc4285aa000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc4285aa000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc4285aa000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc4285aa000, 0x712e1, 0x72000, 0xc429366000, 0x712e1, 0x72000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc4285aa000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc429366000, 0x712e1)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3873 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc428d86000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc428d86000, 0x72000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc428d86000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc428d86000, 0x712e1, 0x72000, 0xc429366000, 0x712e1, 0x72000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc428d86000, 0x712e1, 0x72000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc429366000, 0x712e1)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3887 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc4294dc000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc4294dc000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc4294dc000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc4294dc000, 0x7cfb8, 0x7e000, 0xc42772e000, 0x7cfb8, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc4294dc000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc42772e000, 0x7cfb8)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3901 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc429f5e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc429f5e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc429f5e000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc429f5e000, 0x7cfb8, 0x7e000, 0xc42772e000, 0x7cfb8, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc429f5e000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc42772e000, 0x7cfb8)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3915 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42c4ba000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42c4ba000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42c4ba000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42c4ba000, 0x7cfb8, 0x7e000, 0xc42772e000, 0x7cfb8, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42c4ba000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc42772e000, 0x7cfb8)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3940 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42bf50000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42bf50000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42bf50000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42bf50000, 0x7cfb8, 0x7e000, 0xc42772e000, 0x7cfb8, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42bf50000, 0x7cfb8, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc42772e000, 0x7cfb8)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3954 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc422d40000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc422d40000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc422d40000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc422d40000, 0x618fe, 0x62000, 0xc4249fe000, 0x618fe, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc422d40000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc4249fe000, 0x618fe)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3968 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc428346000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc428346000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc428346000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc428346000, 0x618fe, 0x62000, 0xc4249fe000, 0x618fe, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc428346000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc4249fe000, 0x618fe)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 3981 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc4287ac000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc4287ac000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc4287ac000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc4287ac000, 0x618fe, 0x62000, 0xc4249fe000, 0x618fe, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc4287ac000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc4249fe000, 0x618fe)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4005 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc421b4e000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc421b4e000, 0x62000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc421b4e000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc421b4e000, 0x618fe, 0x62000, 0xc4249fe000, 0x618fe, 0x62000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc421b4e000, 0x618fe, 0x62000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc4249fe000, 0x618fe)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4023 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc429aec000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc429aec000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc429aec000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc429aec000, 0x5eaeb, 0x60000, 0xc42472a000, 0x5eaeb, 0x60000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc429aec000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc42472a000, 0x5eaeb)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4031 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42b06c000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42b06c000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42b06c000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42b06c000, 0x5eaeb, 0x60000, 0xc42472a000, 0x5eaeb, 0x60000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42b06c000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc42472a000, 0x5eaeb)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4044 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc424484000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc424484000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc424484000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc424484000, 0x5eaeb, 0x60000, 0xc42472a000, 0x5eaeb, 0x60000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc424484000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc42472a000, 0x5eaeb)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4069 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42955a000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42955a000, 0x60000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42955a000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42955a000, 0x5eaeb, 0x60000, 0xc42472a000, 0x5eaeb, 0x60000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42955a000, 0x5eaeb, 0x60000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc42472a000, 0x5eaeb)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4085 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42a440000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42a440000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42a440000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42a440000, 0x86d55, 0x88000, 0xc424f26000, 0x86d55, 0x88000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42a440000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc424f26000, 0x86d55)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4098 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42ab02000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42ab02000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42ab02000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42ab02000, 0x86d55, 0x88000, 0xc424f26000, 0x86d55, 0x88000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42ab02000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc424f26000, 0x86d55)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4124 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42be76000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42be76000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42be76000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42be76000, 0x86d55, 0x88000, 0xc424f26000, 0x86d55, 0x88000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42be76000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc424f26000, 0x86d55)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4142 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc424fae000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc424fae000, 0x88000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc424fae000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc424fae000, 0x86d55, 0x88000, 0xc424f26000, 0x86d55, 0x88000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc424fae000, 0x86d55, 0x88000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc424f26000, 0x86d55)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4153 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42bfce000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42bfce000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42bfce000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42bfce000, 0x6bd11, 0x6c000, 0xc42ce46000, 0x6bd11, 0x6c000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42bfce000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc42ce46000, 0x6bd11)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4166 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42973c000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42973c000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42973c000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42973c000, 0x6bd11, 0x6c000, 0xc42ce46000, 0x6bd11, 0x6c000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42973c000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc42ce46000, 0x6bd11)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4185 [IO wait]:
internal/poll.runtime_pollWait(0x7fb9d69c3430, 0x77, 0xc425bd4e10)
	/usr/lib/go-1.10/src/runtime/netpoll.go:173 +0x57
internal/poll.(*pollDesc).wait(0xc420162418, 0x77, 0xffffffffffffff00, 0x5ab580, 0x64e418)
	/usr/lib/go-1.10/src/internal/poll/fd_poll_runtime.go:85 +0x9b
internal/poll.(*pollDesc).waitWrite(0xc420162418, 0xc4223e1900, 0x24326, 0x24615)
	/usr/lib/go-1.10/src/internal/poll/fd_poll_runtime.go:94 +0x3d
internal/poll.(*FD).Write(0xc420162400, 0xc42239a000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:264 +0x237
net.(*netFD).Write(0xc420162400, 0xc42239a000, 0x6bd11, 0x6c000, 0xc42ce46000, 0x6bd11, 0x6c000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc42239a000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc42ce46000, 0x6bd11)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4191 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc425036000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc425036000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc425036000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc425036000, 0x6bd11, 0x6c000, 0xc42ce46000, 0x6bd11, 0x6c000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc425036000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc42ce46000, 0x6bd11)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4204 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc42912c000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc42912c000, 0x6c000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc42912c000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc42912c000, 0x6bd11, 0x6c000, 0xc42ce46000, 0x6bd11, 0x6c000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc42912c000, 0x6bd11, 0x6c000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc42ce46000, 0x6bd11)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4221 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc420c7e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc420c7e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc420c7e000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc420c7e000, 0x7c5a2, 0x7e000, 0xc422c34000, 0x7c5a2, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc420c7e000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc422c34000, 0x7c5a2)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4241 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016240c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162400, 0xc42c0b8000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162400, 0xc42c0b8000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162400, 0xc42c0b8000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162400, 0xc42c0b8000, 0x7c5a2, 0x7e000, 0xc422c34000, 0x7c5a2, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc42c0b8000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc422c34000, 0x7c5a2)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4248 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42812e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42812e000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42812e000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42812e000, 0x7c5a2, 0x7e000, 0xc422c34000, 0x7c5a2, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42812e000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc422c34000, 0x7c5a2)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4259 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc4271d4000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc4271d4000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc4271d4000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc4271d4000, 0x7c5a2, 0x7e000, 0xc422c34000, 0x7c5a2, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc4271d4000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc422c34000, 0x7c5a2)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4273 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42a1b0000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42a1b0000, 0x7e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42a1b0000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42a1b0000, 0x7c5a2, 0x7e000, 0xc422c34000, 0x7c5a2, 0x7e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42a1b0000, 0x7c5a2, 0x7e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc422c34000, 0x7c5a2)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4284 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42d960000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42d960000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42d960000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42d960000, 0x6f446, 0x70000, 0xc42d5e0000, 0x6f446, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42d960000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc42d5e0000, 0x6f446)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4297 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc42c5a4000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc42c5a4000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc42c5a4000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc42c5a4000, 0x69af3, 0x6a000, 0xc427fe2000, 0x69af3, 0x6a000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc42c5a4000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc427fe2000, 0x69af3)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4311 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42cbda000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42cbda000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42cbda000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42cbda000, 0x69af3, 0x6a000, 0xc427fe2000, 0x69af3, 0x6a000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42cbda000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc427fe2000, 0x69af3)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4324 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42b4f4000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42b4f4000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42b4f4000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42b4f4000, 0x69af3, 0x6a000, 0xc427fe2000, 0x69af3, 0x6a000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42b4f4000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc427fe2000, 0x69af3)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4344 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016240c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162400, 0xc42ba56000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162400, 0xc42ba56000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162400, 0xc42ba56000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162400, 0xc42ba56000, 0x69af3, 0x6a000, 0xc427fe2000, 0x69af3, 0x6a000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc42ba56000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc427fe2000, 0x69af3)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4351 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42bd3c000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42bd3c000, 0x6a000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42bd3c000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42bd3c000, 0x69af3, 0x6a000, 0xc427fe2000, 0x69af3, 0x6a000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42bd3c000, 0x69af3, 0x6a000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc427fe2000, 0x69af3)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4359 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc42dea0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc42dea0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc42dea0000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc42dea0000, 0x6f446, 0x70000, 0xc42d5e0000, 0x6f446, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc42dea0000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc42d5e0000, 0x6f446)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4374 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42982c000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42982c000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42982c000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42982c000, 0x6f446, 0x70000, 0xc42d5e0000, 0x6f446, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42982c000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc42d5e0000, 0x6f446)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4387 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42e370000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42e370000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42e370000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42e370000, 0x6f446, 0x70000, 0xc42d5e0000, 0x6f446, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42e370000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc42d5e0000, 0x6f446)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4400 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016240c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162400, 0xc42e920000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162400, 0xc42e920000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162400, 0xc42e920000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162400, 0xc42e920000, 0x6f446, 0x70000, 0xc42d5e0000, 0x6f446, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc42e920000, 0x6f446, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc42d5e0000, 0x6f446)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4410 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016240c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162400, 0xc42a3b8000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162400, 0xc42a3b8000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162400, 0xc42a3b8000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162400, 0xc42a3b8000, 0x6c906, 0x6e000, 0xc429ee0000, 0x6c906, 0x6e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc42a3b8000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc429ee0000, 0x6c906)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4417 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc4242ae000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc4242ae000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc4242ae000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc4242ae000, 0x6c906, 0x6e000, 0xc429ee0000, 0x6c906, 0x6e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc4242ae000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc429ee0000, 0x6c906)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4432 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016240c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162400, 0xc428f7c000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162400, 0xc428f7c000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162400, 0xc428f7c000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162400, 0xc428f7c000, 0x6ff85, 0x70000, 0xc427630000, 0x6ff85, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc4200960a0, 0xc428f7c000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc4200960a0, 0xc427630000, 0x6ff85)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4451 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc429984000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc429984000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc429984000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc429984000, 0x6c906, 0x6e000, 0xc429ee0000, 0x6c906, 0x6e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc429984000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc429ee0000, 0x6c906)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4459 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42ae78000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42ae78000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42ae78000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42ae78000, 0x6c906, 0x6e000, 0xc429ee0000, 0x6c906, 0x6e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42ae78000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc429ee0000, 0x6c906)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4472 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc425fda000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc425fda000, 0x6e000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc425fda000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc425fda000, 0x6c906, 0x6e000, 0xc429ee0000, 0x6c906, 0x6e000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc425fda000, 0x6c906, 0x6e000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc429ee0000, 0x6c906)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4502 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019860c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198600, 0xc42d7a0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198600, 0xc42d7a0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198600, 0xc42d7a0000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198600, 0xc42d7a0000, 0x6ff85, 0x70000, 0xc427630000, 0x6ff85, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e060, 0xc42d7a0000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e060, 0xc427630000, 0x6ff85)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4514 [semacquire]:
internal/poll.runtime_Semacquire(0xc42019858c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420198580, 0xc42ccb4000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420198580, 0xc42ccb4000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420198580, 0xc42ccb4000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420198580, 0xc42ccb4000, 0x6ff85, 0x70000, 0xc427630000, 0x6ff85, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc42000e058, 0xc42ccb4000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc42000e058, 0xc427630000, 0x6ff85)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f
goroutine 4527 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016258c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162580, 0xc42d9d0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162580, 0xc42d9d0000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162580, 0xc42d9d0000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162580, 0xc42d9d0000, 0x6ff85, 0x70000, 0xc427630000, 0x6ff85, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096038, 0xc42d9d0000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096038, 0xc427630000, 0x6ff85)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f

goroutine 4541 [semacquire]:
internal/poll.runtime_Semacquire(0xc42016250c)
	/usr/lib/go-1.10/src/runtime/sema.go:61 +0x39
internal/poll.(*fdMutex).rwlock(0xc420162500, 0xc42c216000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:152 +0xad
internal/poll.(*FD).writeLock(0xc420162500, 0xc42c216000, 0x70000)
	/usr/lib/go-1.10/src/internal/poll/fd_mutex.go:237 +0x32
internal/poll.(*FD).Write(0xc420162500, 0xc42c216000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/internal/poll/fd_unix.go:243 +0x46
net.(*netFD).Write(0xc420162500, 0xc42c216000, 0x6ff85, 0x70000, 0xc427630000, 0x6ff85, 0x70000)
	/usr/lib/go-1.10/src/net/fd_unix.go:220 +0x4f
net.(*conn).Write(0xc420096028, 0xc42c216000, 0x6ff85, 0x70000, 0x0, 0x0, 0x0)
	/usr/lib/go-1.10/src/net/net.go:188 +0x6a
main.sendDataToClient(0x5acb60, 0xc420096028, 0xc427630000, 0x6ff85)
	/home/abx/tcp-server/tcp-gist-coder543.go:43 +0x7d
created by main.sendDataToClients
	/home/abx/tcp-server/tcp-gist-coder543.go:59 +0x11f