Initial transport layer implementation

Uninitialized bytes in __interceptor_strlen at offset 0 inside [0x701000000040, 1)
==220==WARNING: MemorySanitizer: use-of-uninitialized-value
    #0 0x535c13 in freerdp_assistance_hex_string_to_bin /src/FreeRDP/libfreerdp/common/assistance.c:711:11
    #1 0x533deb in LLVMFuzzerTestOneInput /src/FreeRDP/libfreerdp/common/test/TestFuzzCommonAssistanceHexStringToBin.c:5:15
    #2 0x43f5f3 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
    #3 0x4409a4 in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:804:3
    #4 0x440e79 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:857:3
    #5 0x4304df in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerDriver.cpp:912:6
    #6 0x459b32 in main /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerMain.cpp:20:10
    #7 0x7effc08bb082 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x24082) (BuildId: 1878e6b475720c7c51969e69ab2d276fae6d1dee)
    #8 0x420f1d in _start (/tmp/not-out/tmpu5o6go0a/TestFuzzCommonAssistanceHexStringToBin+0x420f1d)

…e_file_buffer

```
READ of size 2 at 0x602000000091 thread T0
SCARINESS: 14 (2-byte-read-heap-buffer-overflow)
    #0 0x4c6fb9 in StrstrCheck(void*, char*, char const*, char const*) /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:580:5
    #1 0x4c6df1 in strstr /src/llvm-project/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:597:5
    #2 0x56c9ba in freerdp_assistance_parse_file_buffer /src/FreeRDP/libfreerdp/common/assistance.c:743:6
    #3 0x56b58e in parse_file_buffer /src/FreeRDP/libfreerdp/common/test/TestFuzzCommonAssistanceParseFileBuffer.c:11:11
    #4 0x56b58e in LLVMFuzzerTestOneInput /src/FreeRDP/libfreerdp/common/test/TestFuzzCommonAssistanceParseFileBuffer.c:20:2
    #5 0x43f5e3 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:611:15
    #6 0x440994 in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__Fuzzer::vector<fuzzer::SizedFile, std::__Fuzzer::allocator<fuzzer::SizedFile> >&) /src/llvm-project/compiler-rt/lib/fuzzer/FuzzerLoop.cpp:804:3
```

found by coverity

705        if (transferDir == USBD_TRANSFER_DIRECTION_OUT)
706        {
      18. Condition !Stream_CheckAndLogRequiredLengthEx("com.freerdp.channels.urbdrc.client" /* "com.freerdp.channels.urbdrc.client" */, 3, s, OutputBufferSize, 1, "%s(%s:%zu)" /* "%s(%s:%zu)" */, <anonymous>, "/home/runner/work/FreeRDP/FreeRDP/channels/urbdrc/client/data_transfer.c", 707UL /* (size_t)707 */), taking true branch.
707                if (!Stream_CheckAndLogRequiredLength(TAG, s, OutputBufferSize))

CID 424733: (FreeRDP#1 of 1): Resource leak (RESOURCE_LEAK)
19. leaked_storage: Variable out going out of scope leaks the storage it points to.
708                        return ERROR_INVALID_DATA;
709                Stream_Copy(s, out, OutputBufferSize);
710        }

found by coverity

655        if (Stream_Write_UTF16_String_From_UTF8(s, tmpDirCharLen - 1, tempDirectory->szTempDir,
656                                                ARRAYSIZE(tempDirectory->szTempDir), TRUE) < 0)

CID 424748: (FreeRDP#1 of 1): Resource leak (RESOURCE_LEAK)
9. leaked_storage: Variable s going out of scope leaks the storage it points to.
657                return ERROR_INTERNAL_ERROR;
658        /* Path must be 260 UTF16 characters with '\0' termination.
659         * ensure this here */

found by coverity

128                if (winpr_asprintf(&headers, &size, post_header_fmt, path, hostname, blen) < 0)

CID 424888: (FreeRDP#1 of 1): Resource leak (RESOURCE_LEAK)
15. leaked_storage: Variable hostname going out of scope leaks the storage it points to.
129                        return FALSE;
130        }

found by coverity

128                if (winpr_asprintf(&headers, &size, post_header_fmt, path, hostname, blen) < 0)

CID 424888: (FreeRDP#1 of 1): Resource leak (RESOURCE_LEAK)
15. leaked_storage: Variable hostname going out of scope leaks the storage it points to.
129                        return FALSE;
130        }

found by coverity

705        if (transferDir == USBD_TRANSFER_DIRECTION_OUT)
706        {
      18. Condition !Stream_CheckAndLogRequiredLengthEx("com.freerdp.channels.urbdrc.client" /* "com.freerdp.channels.urbdrc.client" */, 3, s, OutputBufferSize, 1, "%s(%s:%zu)" /* "%s(%s:%zu)" */, <anonymous>, "/home/runner/work/FreeRDP/FreeRDP/channels/urbdrc/client/data_transfer.c", 707UL /* (size_t)707 */), taking true branch.
707                if (!Stream_CheckAndLogRequiredLength(TAG, s, OutputBufferSize))

CID 424733: (#1 of 1): Resource leak (RESOURCE_LEAK)
19. leaked_storage: Variable out going out of scope leaks the storage it points to.
708                        return ERROR_INVALID_DATA;
709                Stream_Copy(s, out, OutputBufferSize);
710        }

found by coverity

655        if (Stream_Write_UTF16_String_From_UTF8(s, tmpDirCharLen - 1, tempDirectory->szTempDir,
656                                                ARRAYSIZE(tempDirectory->szTempDir), TRUE) < 0)

CID 424748: (#1 of 1): Resource leak (RESOURCE_LEAK)
9. leaked_storage: Variable s going out of scope leaks the storage it points to.
657                return ERROR_INTERNAL_ERROR;
658        /* Path must be 260 UTF16 characters with '\0' termination.
659         * ensure this here */

found by coverity

128                if (winpr_asprintf(&headers, &size, post_header_fmt, path, hostname, blen) < 0)

CID 424888: (#1 of 1): Resource leak (RESOURCE_LEAK)
15. leaked_storage: Variable hostname going out of scope leaks the storage it points to.
129                        return FALSE;
130        }

Fix hanging RDP connection when opposite side is down and thru forwarder