Function at 0x49f4b0
Capabilities:
Send data
Send data on socket

Disassembly:
sub rsp, 0x38
mov rax, qword [rcx + 0x10]
mov qword [rsp + 0x48], rbx
mov qword [rsp + 0x50], rsi
xor esi, esi
sub edx, 4
mov qword [rsp + 0x58], rdi
mov rdi, qword [rax]
mov rbx, rcx
je 0x49f626
dec edx
je 0x49f5b3
cmp edx, 2
je 0x49f500
lea r8, str.tftp_tx:_internal_error
lea rdx, [0x005754ec]
mov rcx, rdi
call fcn.00496db0
jmp 0x49f7da
movzx r8d, word [rcx + 0x48]
inc dword [rcx + 0x20]
mov r9d, dword [rcx + 0x20]
lea rdx, str.Timeout_waiting_for_block__d_ACK.__Retries___d_n
inc r8d
mov rcx, rdi
call fcn.00496cb0
mov r11d, dword [rbx + 0x28]
cmp dword [rbx + 0x20], r11d
jle 0x49f53a
mov dword [rbx + 8], 0xffffff9d
mov dword [rbx], 3
jmp 0x49f7da
mov eax, dword [rbx + 0x150]
mov r8d, dword [rbx + 0x158]
mov rdx, qword [rbx + 0x170]
lea rcx, [rbx + 0xd0]
mov dword [rsp + 0x28], eax
add r8d, 4
mov qword [rsp + 0x20], rcx
mov rcx, qword [rbx + 0x18]
xor r9d, r9d
call qword [sym.imp.WS2_32.dll_sendto]
test eax, eax
jns 0x49f7ce
call qword [sym.imp.WS2_32.dll_WSAGetLastError]
mov rcx, qword [rbx + 0x10]
mov edx, eax
call fcn.0048a2b0
lea rdx, [0x005754ec]
mov rcx, rdi
mov r8, rax
call fcn.00496db0
mov eax, reloc.WS2_32.dll_getservbyname
mov rdi, qword [rsp + 0x58]
mov rsi, qword [rsp + 0x50]
mov rbx, qword [rsp + 0x48]
add rsp, 0x38
ret
mov dword [rcx], 3
mov rax, qword [rcx + 0x170]
xor r9d, r9d
mov byte [rax], sil
mov rax, qword [rcx + 0x170]
lea r8d, [r9 + 4]
mov byte [rax + 1], 5
movzx edx, word [rcx + 0x48]
mov rax, qword [rbx + 0x170]
movzx ecx, dx
shr cx, 8
mov byte [rax + 2], cl
mov rax, qword [rbx + 0x170]
lea rcx, [rbx + 0xd0]
mov byte [rax + 3], dl
mov eax, dword [rbx + 0x150]
mov rdx, qword [rbx + 0x170]
mov dword [rsp + 0x28], eax
mov qword [rsp + 0x20], rcx
mov rcx, qword [rbx + 0x18]
call qword [sym.imp.WS2_32.dll_sendto]
mov dword [rbx], 3
jmp 0x49f7da
mov rcx, qword [rcx + 0x168]
movzx r9d, word [rbx + 0x48]
movzx eax, byte [rcx + 2]
shl ax, 8
movzx r8d, ax
movzx eax, byte [rcx + 3]
or r8d, eax
cmp r8d, r9d
je 0x49f70e
lea rdx, str.Received_ACK_for_block__d__expecting__d_n
mov rcx, rdi
call fcn.00496cb0
inc dword [rbx + 0x20]
mov eax, dword [rbx + 0x20]
cmp eax, dword [rbx + 0x28]
jle 0x49f697
movzx r8d, word [rbx + 0x48]
lea rdx, str.tftp_tx:_giving_up_waiting_for_block__d_ack
mov rcx, rdi
call fcn.00496db0
mov esi, reloc.WS2_32.dll_getservbyname
mov eax, esi
mov rdi, qword [rsp + 0x58]
mov rsi, qword [rsp + 0x50]
mov rbx, qword [rsp + 0x48]
add rsp, 0x38
ret
mov eax, dword [rbx + 0x150]
mov r8d, dword [rbx + 0x158]
lea rcx, [rbx + 0xd0]
mov dword [rsp + 0x28], eax
mov qword [rsp + 0x20], rcx
mov rcx, qword [rbx + 0x18]
lea rdx, [rbx + 0x170]
add r8d, 4
xor r9d, r9d
call qword [sym.imp.WS2_32.dll_sendto]
test eax, eax
jns 0x49f6f8
call qword [sym.imp.WS2_32.dll_WSAGetLastError]
mov rcx, qword [rbx + 0x10]
mov edx, eax
call fcn.0048a2b0
lea rdx, [0x005754ec]
mov rcx, rdi
mov r8, rax
call fcn.00496db0
mov esi, reloc.WS2_32.dll_getservbyname
mov eax, esi
mov rdi, qword [rsp + 0x58]
mov rsi, qword [rsp + 0x50]
mov rbx, qword [rsp + 0x48]
add rsp, 0x38
ret
lea rcx, [rbx + 0x40]
call qword [sym.imp.msvcrt.dll_time]
inc word [rbx + 0x48]
mov dword [rbx + 0x20], esi
mov rax, qword [rbx + 0x170]
mov byte [rax], sil
mov rax, qword [rbx + 0x170]
mov byte [rax + 1], 3
movzx edx, word [rbx + 0x48]
mov rax, qword [rbx + 0x170]
movzx ecx, dx
shr cx, 8
mov byte [rax + 2], cl
mov rax, qword [rbx + 0x170]
mov byte [rax + 3], dl
cmp word [rbx + 0x48], 1
jbe 0x49f76c
mov eax, dword [rbx + 0x15c]
cmp dword [rbx + 0x158], eax
jl 0x49f52f
mov edx, dword [rbx + 0x15c]
mov rcx, qword [rbx + 0x10]
lea r8, [rbx + 0x158]
call fcn.00492100
test eax, eax
jne 0x49f7dc
mov eax, dword [rbx + 0x150]
mov r8d, dword [rbx + 0x158]
mov rdx, qword [rbx + 0x170]
lea rcx, [rbx + 0xd0]
mov dword [rsp + 0x28], eax
add r8d, 4
mov qword [rsp + 0x20], rcx
mov rcx, qword [rbx + 0x18]
xor r9d, r9d
call qword [sym.imp.WS2_32.dll_sendto]
test eax, eax
js 0x49f577
movsxd rax, dword [rbx + 0x158]
add qword [rdi + 0x50], rax
mov rdx, qword [rdi + 0x50]
mov rcx, rdi
call fcn.004b2ab0
xor eax, eax
mov rdi, qword [rsp + 0x58]
mov rsi, qword [rsp + 0x50]
mov rbx, qword [rsp + 0x48]
add rsp, 0x38
ret