Function at 0x521550
Capabilities:
Send data
Send data on socket

Disassembly:
sub esp, 0x104
mov eax, dword [0x6a8c7c]
xor eax, esp
mov dword [esp + 0x100], eax
mov eax, dword [esp + 0x10c]
push ebx
push esi
mov esi, dword [esp + 0x110]
add eax, 0xfffffffd
push edi
mov edi, dword [esi + 0x10]
cmp eax, 4
ja case.0x521584.4
jmp dword [eax*4 + 0x521888]
mov eax, dword [esi + 0x148]
movzx ecx, word [esi + 0x144]
movzx ebx, byte [eax + 2]
movzx eax, byte [eax + 3]
shl ebx, 8
or ebx, eax
lea eax, [ecx + 1]
movzx eax, ax
cmp eax, ebx
jne 0x5215b8
mov dword [esi + 0x18], 0
jmp 0x5215cf
cmp ecx, ebx
jne 0x521672
push ebx
push str.Received_last_DATA_packet_block__d_again.
push edi
call fcn.004f9700
add esp, 0xc
mov word [esi + 0x144], bx
mov eax, dword [esi + 0x14c]
mov byte [eax], 0
mov eax, dword [esi + 0x14c]
mov byte [eax + 1], 4
movzx edx, word [esi + 0x144]
mov eax, dword [esi + 0x14c]
mov ecx, edx
shr ecx, 8
mov byte [eax + 2], cl
mov eax, dword [esi + 0x14c]
mov byte [eax + 3], dl
lea eax, [esi + 0xb0]
push dword [esi + 0x130]
push eax
push 0
push 4
push dword [esi + 0x14c]
push dword [esi + 0x14]
call dword [sym.imp.WS2_32.dll_sendto]
test eax, eax
js 0x5217a4
mov eax, dword [esi + 0x13c]
xor ecx, ecx
add eax, 4
cmp dword [esi + 0x134], eax
lea eax, [esi + 0x28]
push eax
setl cl
lea ecx, [ecx*2 + 1]
mov dword [esi], ecx
call fcn.005fc1aa
add esp, 4
xor eax, eax
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
push eax
push ebx
push str.Received_unexpected_DATA_packet_block__d__expecting_block__d
push edi
call fcn.004f9700
add esp, 0x10
xor eax, eax
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
xor eax, eax
mov word [esi + 0x144], ax
mov dword [esi + 0x18], eax
mov eax, dword [esi + 0x14c]
mov byte [eax], 0
mov eax, dword [esi + 0x14c]
mov byte [eax + 1], 4
movzx edx, word [esi + 0x144]
mov eax, dword [esi + 0x14c]
mov ecx, edx
shr ecx, 8
mov byte [eax + 2], cl
mov eax, dword [esi + 0x14c]
mov byte [eax + 3], dl
lea eax, [esi + 0xb0]
push dword [esi + 0x130]
push eax
push 0
push 4
push dword [esi + 0x14c]
push dword [esi + 0x14]
call dword [sym.imp.WS2_32.dll_sendto]
test eax, eax
js 0x5217a4
lea eax, [esi + 0x28]
mov dword [esi], 1
push eax
call fcn.005fc1aa
add esp, 4
xor eax, eax
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
movzx eax, word [esi + 0x144]
inc dword [esi + 0x18]
inc eax
push dword [esi + 0x18]
movzx eax, ax
push eax
push str.Timeout_waiting_for_block__d_ACK.__Retries___d
push edi
call fcn.004f9700
mov eax, dword [esi + 0x18]
add esp, 0x10
cmp eax, dword [esi + 0x20]
jle 0x52177c
pop edi
mov dword [esi + 8], 0xffffff9d
xor eax, eax
mov dword [esi], 3
pop esi
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
push dword [esi + 0x130]
lea eax, [esi + 0xb0]
push eax
push 0
push 4
push dword [esi + 0x14c]
push dword [esi + 0x14]
call dword [sym.imp.WS2_32.dll_sendto]
test eax, eax
jns 0x52183d
push 0x100
lea eax, [esp + 0x10]
push eax
call dword [sym.imp.WS2_32.dll_WSAGetLastError]
push eax
call fcn.0050c530
push eax
push 0x624af4
push edi
call fcn.004f9630
add esp, 0x18
mov eax, 0x37
pop edi
pop esi
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
mov eax, dword [esi + 0x14c]
mov byte [eax], 0
mov eax, dword [esi + 0x14c]
mov byte [eax + 1], 5
movzx edx, word [esi + 0x144]
mov eax, dword [esi + 0x14c]
mov ecx, edx
shr ecx, 8
mov byte [eax + 2], cl
mov eax, dword [esi + 0x14c]
mov byte [eax + 3], dl
lea eax, [esi + 0xb0]
push dword [esi + 0x130]
push eax
push 0
push 4
push dword [esi + 0x14c]
push dword [esi + 0x14]
call dword [sym.imp.WS2_32.dll_sendto]
mov dword [esi], 3
pop edi
pop esi
xor eax, eax
pop ebx
mov ecx, dword [esp + 0x100]
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret
push str.tftp_rx:_internal_error
push 0x624af4
push edi
call fcn.004f9630
mov ecx, dword [esp + 0x118]
add esp, 0xc
mov eax, 0x47
pop edi
pop esi
pop ebx
xor ecx, esp
call fcn.005d584c
add esp, 0x104
ret